Ashtabula River railroad disaster

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connection. As with the connection between diagonals and angle blocks, it was critical that there be no space between the I-beams and the lugs on top of the angle block because these lugs transferred axial forces to the next member. Space between the member and lug would reduce the effectiveness of this transfer and introduce shear stress to the lug. The problems with camber led to members of the chords being shortened and the lugs being shaved down, actions which introduced space between the lugs and the chord members. Construction workers used metal shims to fill the space between the lug and the chord members until a tight fit was achieved. Friction alone, rather than an active connection such as a yoke or bolt, kept the shims in place. For some years prior to the disaster, locomotive engineers reported hearing "snapping sounds" as their trains crossed the Ashtabula Bridge. This indicates that some shims had come loose and fallen off, reintroducing space between the chord members and angle block vertical lugs. This allowed members of the chord to thrust suddenly against the lugs, inducing even more metal fatigue. There is also an indication in the construction record that several chord members were misaligned. Even if their bearings had been flat, they would not have met the lugs completely. This, too, would have created uneven loading and worsened metal fatigue.

872:(stretches them). If the diagonals are already closely fitted to the angle blocks, prestressing compresses the diagonals. This allows them to carry more load. The Ashtabula Bridge diagonals, however, were only loosely fitted to the angle blocks. Prestressing brought the diagonals into a relatively close fit with the angle blocks, but did not put the diagonals in compression. The problem was worsened because shims were used to fill the space between the diagonal bearings and the angle blocks. The history of the bridge indicates that some of these shims had come loose over time and fallen away. The loss of shims induced uneven loading, as the more tightly connected diagonals absorbed load before the loose ones did. Åkesson points out that the shims themselves may even have created unequal pressure points between I-beams and the lugs, subjecting the lugs to bending forces as well as shear forces. With the diagonals not carrying the load they were intended to carry, extra stress was placed on the chords. Unequal loading of the angle blocks worsened the metal fatigue. 880:

other panel, the five beams making up each chord did not have a continuous interconnection between them, and the none of the parallel I-beams making up the diagonals were continuously interconnected. Åkesson points out that construction errors probably made the diagonals even less effective as thin members were placed where thicker ones should have gone and vice versa. The braces and counter-braces in a Howe truss must be the same size for the truss system to be robust and redundant. Making a brace stronger relative to a counter-brace, for example, actually reduces robustness and redundancy by changing the relative distribution of forces on the diagonals. These errors appreciably lessened the bridge's ability to withstand extra loading. Stone's strengthening of the bridge after the camber repairs also harmed the bridge's capabilities. By adding two I-beams to the end braces, Stone actually reduced the maximum stress the braces in the end panels could bear.

740:. Senator A.M. Burns chaired the committee. The joint committee hired three civil engineers (Benjamin F. Bowen, John Graham, and Thomas H. Johnson) to examine the wreckage and report to the committee regarding the bridge's design and performance. The committee also received written reports from civil engineers Albert S. Howland and W.S. Williams, and took personal testimony from civil engineer M.J. Becker and from railroad officials and employees Amasa Stone, Charles Collins, Albert Congdon, A.L. Rogers, and Gustavus Folsom (engineer of the "Columbia"). Technical advice was provided by civil engineers D.W. Caldwell and J.E. Wright. The coroner's jury granted the joint committee full access to all of its testimony and reports as well. In appendices to its report, the joint committee printed in full the coroner's jury testimony of civil engineers A. Gottlieb, John D. Crehore, and Joseph Tomlinson. 367:

iron rod 2 inches (51 mm) thick. The top of the rod passed through the space between the members of the chord at the top of the bridge and then through a gib-plate. A nut and washer screwed onto the upper end of the rod, creating tension as well as securing the gib-plate in place. Those angle blocks at the top of the bridge had vertical, squarish lugs. Those members of the chord which ended atop an angle block had their bearings placed against the lug. These lugs served to transmit stress from the chord to the angle block and thence to the diagonals. These upper angle blocks also had lugs facing inward, to which were attached (by means MacDonald did not describe) the lateral braces. The interior side of each upper angle block also had a recess to accept a lug and a tap bolt. The tap bolt was used to connect the lug on the end of the sway rod to the angle block.

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ground north of the bridge. The lower chord (at the top of the bridge) and what remained of the deck held for a moment, then fell directly down to land atop the locomotive, express cars, and baggage cars. Momentum pulled the rest of the train into the space where the bridge used to be. The first passenger coach landed upright in mid-stream atop the wreckage of the bridge and the second express car. The second passenger car twisted in the air as it fell, landing on its side atop the bridge and first baggage car. The smoking car, having broken free of the passenger coach ahead of it, moved more freely. It struck the forward part of the second passenger coach, crushing it, before being propelled into the first passenger coach. (It is widely believed most people in the first passenger coach died when the smoking car fell on them.)

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significantly weakened the ability of the lugs to transmit stress from the chord to the braces and counter-braces. According to his report, "The cast iron angle block at top of second set of braces had the south lug broken off close to the face, and the line of fracture disclosed an air hole extending over one half the entire section. ... failure first began in the south truss, at the second panel point from the west abutment." The second full angle block "was so far impaired by an air hole as to be reduced in strength fully one half. ... At no other point were these lugs subjected to so great strain, except at the end casting and here they were heavily reinforced." This "defective detail" caused the collapse of the bridge.

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accident nor those traveling on railroad-issued passes. Brakeman A.H. Stone believed the number of passengers was closer to 200, a number also used by historian Darrell E. Hamilton. A wide range of numbers is offered by other sources: 131, 147 (128 passengers and 19 crew), 156, 159, 160, 197 (the railroad's official count), "nearly 200", 130 to 300, "nearly 300" (the conductor's estimate) and "over 300". The day and express coaches sat 70 people each and were full, and the sleepers held 30 passengers each. The smoking car was "not well filled". Passengers on the train believed there were many more than 131, as they had difficulty finding seats and sleeping berths. The number of crew, 19, is more firmly established.

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second panel from the end. This worsened the bridge's dead load problem. Collins, Congdon, Rogers, and Stone all later testified that the I-beams making up the diagonals were now turned 90 degrees, so that the flanges were horizontal. Congdon says that he realized the I-beams would carry more live load if they were rotated. Collins, Rogers, and Stone believed workers had installed the beams incorrectly (on their sides). To make the change, Stone had workers cut away portions of each diagonal I-beam's web at the bearing, enabling the web to fit over the lugs. This weakened the new diagonals. There is also some evidence that the angle blocks were damaged while the braces and counter-braces were rotated.

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that some survivors were still trapped in the wreck. Railroad employees also told Knapp that his firefighters should get the wounded out and clear a pathway up the side of the ravine. At least one member of the town begged Knapp to put water on the flames, but he refused. Instead, the townspeople secured buckets and (with the help of some members of the fire brigade) tried to put out the blaze. The Protection Fire Company's hand-pumped engine and the Neptune Hose Company's steam-pumper (both horse-drawn) were hauled more than a mile through town to the bridge, but arrived too late to stop the spread of the fire.

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feet, hoes, rakes, and shovels to dig through the ash, ice, mud, and snow to find any personal items they could. These items—which included partially burned train tickets, diaries, photographs, watches, jewelry, unique or rare items of clothing, or keepsakes—were kept by the railroad. When a corpse could not be identified, grieving families sometimes were able to use these "relics" to confirm that a loved one had been aboard the train. Even so, identifying objects or papers often were separated from remains, and misidentification of remains was common.

356: 535: 336:(its ability to carry trains). He also concluded that the beams and posts Stone intended to use were undersized. Tomlinson proposed riveting plates to the I-beams to strengthen them, but Stone angrily refused. Stone demanded that Tomlinson make the changes he required. Tomlinson refused, and was fired from the design effort. Stone then ordered the CP&A's chief engineer, Charles Collins, to make the desired changes to the bridge design. Collins refused, and was fired from the design effort. Stone then made the changes to the design. 551:

Buffalo" then nose-dived into the rear of the "Palatine", partially crushing it and killing several people. It continued through the "Palatine" into the rear of the "Yokohama", pushing the parlor car onto its side. The "Buffalo" smashed forward along the length of the parlor car, likely killing everyone inside. The rear of the "Buffalo" lay atop the "Palatine", high in the air. An eyewitness said no one in the "City of Buffalo" survived the crash. The final sleeper, the "Osceo", landed on the east bank of the river, mostly upright.

583:-fed heating stoves and oil lamps overturned. An early report said fire broke out in the "Osceo" and in at least three other places, and within a minute the entire wreck was ablaze. Historian Darrell E. Hamilton says the fire broke out at either end, and moved toward the middle. According to rear brakeman A.H. Stone, those still left alive in the wreckage were dead within 20 minutes. By the time rescuers reached the bridge, many wounded passengers had already made their way to the shore and the fire was burning fiercely. 907: 347:. Stone's other major change involved the end panels. In the traditional Howe truss bridge, the end panel on each side of each end of the bridge has three vertical posts and three diagonal braces. Only five Howe truss bridges ever built by 1863 had just one vertical post and two diagonal braces in the end panels. These were known as "Single Howe" bridges. Amasa Stone used the "Single Howe" design for the end panels at Ashtabula. Thus, the bridge's entire structure relied on just 12 beams and posts (three at each end). 410:

other changes as well, but it is uncertain what these included. Gasparini and Fields suggest he had the lugs atop the angle block planed down as well. When the falsework began to be removed, the dead load caused the bridge to bend about 2.5 inches (64 mm) below horizontal. The bridge was jacked up and the falsework put back in place. Stone then ordered the chord members to be returned to their original lengths, restoring Tomlinson's intended camber. Rather than ordering new I-beams, Rogers used

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angle blocks and the flanges on the I-beams of the chords were cut away in part, reducing their strength and effectiveness. The construction of the yokes used to bind the braces and counter-braces was poor, and shims were used to compensate for chord members which were too short. The modifications made to the bridge before its completion used thick members where thin ones were required, and thin ones where thick ones should have been used.

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Cast iron is prone to fracture and fatigue cracks, and Gasparini and Fields suggest that a significant fatigue crack, originating at the void in the lug, existed at the time of the disaster, created by repeated unequal stress over the previous 11 years. The low temperatures on the night of the accident increased the brittleness of the cast iron. An existing fracture worsened in the cold and likely caused the lug's failure.

652: 309: 371:(127.0 by 9.5 mm). Where a member of the chord ended at an angle block, a 3-by-1-inch (76 by 25 mm) lug was forged at the base of the bar. This lug fit into a slot in the angle block. The angle blocks which made up the chord at the bottom of the bridge also had lugs facing inward, to which were attached (by means MacDonald did not describe) the lateral braces. 603:

Ashtabula House hotel. As these places filled, residents opened their homes to the survivors. Ambulatory injured were the last to be hauled up from the valley. By midnight, all the survivors had reached safety. The 10 doctors in the village attended to the wounded. About 1 AM, a special train arrived from Cleveland carrying railroad officials and five more surgeons.

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reacts in compression, counteracting the tension. Amasa Stone inverted this design so that only the upper chord (now at the bottom of the bridge) provided tension. Where diagonal braces did not receive the extra compression from a live load, inverted Howe truss bridges had a tendency to buckle where the vertical posts were attached to the deck with

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difficult to estimate and in part because many remains were partial (a hand, a leg, a torso). Most (although not all) remains recovered from the wreck were burned beyond recognition and could not be identified from clothing or personal items. An unknown number of the dead were essentially cremated in the blaze. Among the dead was hymn writer

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Whether braces or counter-braces had moved or even fallen out of position was a point of dispute. Albert Howland, civil engineer hired by the joint legislative committee, said some braces had moved between 0.5 to 1.5 inches (13 to 38 mm) out of place. John D. Crehore, another civil engineer also

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Low temperatures the night of the disaster also worsened the metal fatigue in the already damaged lug. The role that low temperatures played in creating and worsening metal fatigue was also poorly understood in the 19th century. The temperature at the time of the accident was 16 °F (−9 °C).

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The construction of the upper chord of the bridge was also poor. This chord consisted of five I-beams running in parallel. Having all five members end at panel joints actually weakened a bridge, so Howe trusses were built so that three ended at one panel connection and the other two at the next panel

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MacDonald believed the bridge collapsed due to a flaw in the southernmost lug at the top of the first full angle block from the west end. He noted that the lugs atop the angle blocks on the bridge had, for some reason, been shaved down to 1.6875 inches (42.86 mm) from 2 inches (51 mm). This

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The bridge's design was flawed. Nothing in the design prevented the lateral buckling of the braces or the upper chord. Only a part of the upper chord was designed to transmit load to the angle blocks, and the lugs on the angle blocks were poorly designed (so that strain could not be fully transmitted

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Edward W. Richards on December 31. The jury took testimony from 20 railroad officials and employees (including both locomotive engineers and the rear brakeman), nine members of the Ashtabula fire department, 10 residents of Ashtabula, six passengers, and eight civil engineers and bridge builders. The

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who even when sober was slow to make decisions and easily confused. The Lake Erie Hose Company's hand- and steam-pumped horse-drawn fire engines arrived first, but Knapp never gave any orders to fight the flames. He told a bystander that there was no use in fighting the fire, even though it was plain

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Momentum also carried the parlor car "Yokohama" and the three sleeper cars into the chasm. All of them landed about 80 feet (24 m) south of the bridge. The "Yokohama" landed upright in mid-stream, and the sleeper "Palatine" landed mostly right-side up beside it to the north. The sleeper "City of

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of the bridge came into play, the camber would drop to between 3.5 to 4 inches (89 to 102 mm). Tomlinson was alarmed when Stone demanded that the bridge be constructed completely of iron, rather than a combination of wood and iron. An all-iron bridge would have a much greater dead load, reducing

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train, the Pacific Express, passed over the bridge as it failed. All but the lead locomotive plunged into the river. The train's oil lanterns and coal-fired heating stoves set the wooden cars alight. Firefighters declined to extinguish the flames, leaving individuals to try to pull survivors from the

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Some eyewitnesses alleged that Bliss survived the wreck but ran into the flames to try to save others and perished. A number of sources from the 19th century claimed Bliss tried to rush back into the flames to save his wife and children. (His children were not traveling with him.) Historians believe

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The CP&A changed its name to the Lake Shore Railway on June 17, 1868, and merged with the Michigan Southern and Northern Indiana Railroad on April 6, 1869, to form the Lake Shore and Michigan Southern Railway (LS&MS). This was followed on August 1, 1869, by the merger of the Buffalo and Erie

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Days after testifying before the state legislature committee, LS&MS chief engineer Charles Collins was found dead in his bedroom of a gunshot wound to the head. Having tendered his resignation to the railroad's board of directors the previous Monday and been refused, Collins was believed to have

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LS&MS president Amasa Stone categorically denied that there were any design or construction flaws. He initially blamed the bridge's collapse on the deraillment of one of the two locomotives pulling the train, or by a loose rail which caused the train's deraillment. The railroad also hypothesized

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The defects in design and construction could have been identified by careful inspection at any time, but the railroad's inspectors did not identify these problems. Many braces and counter-braces had fallen out of position before the bridge collapsed, something inspectors either did not notice or the

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The fire was worsened by the failure of those on the scene to attempt to douse the flames. The Lake Erie Hose Company's hand pump and steam pump, first on the scene, could have saved lives. The Neptune Hose Company's steam pump and the Protection Fire Company's hand pump were hauled more than 1 mile

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The bridge was poorly constructed. Each member of the bridge acted independently instead of being positively connected to its neighbors. Some of the vertical posts, braces, and cross-braces were put in the wrong places. To accommodate design changes during the bridge's strengthening, the lugs on the

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The bridge was poorly designed. An all-iron Howe truss was unsuitable for such a long bridge. Some of the members of the chords and braces were not designed to be of sufficient strength, and were poorly placed. The lateral cross-bracing was so underdesigned as to be of little value. The angle blocks

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Concerned friends and family members sent letters and telegrams in the hundreds to railroad and civic authorities, seeking knowledge of their loved ones. These contained descriptions of the alleged passenger, as well as any identifying personal effects. Some of these letters were fraudulent, sent by

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The injured and dying were either carried up the steep steps or hauled up the incline on sleds or sleighs pulled up by rope. There was no hospital in Ashtabula. The injured were first taken to the railroad engine house, to the filthy and run-down Eagle Hotel adjacent to the station, or to the nearby

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The "Columbia" and the 11 cars behind it acted like a linked chain load. The bridge's collapse was therefore not sudden, but rather somewhat slow and piecemeal. The "Columbia" struck the abutment, the engine supported by the stonework while the tender hung downward toward the river valley. The first

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The joint committee's report placed the proximate cause of the bridge's failure on buckling at the joint between the second and third panel from the west end of the bridge. However, the committee was unable to determine whether it was a chord member or brace which failed. Albert Howland, one of the

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The exact number of passengers cannot be known. Conductor Barnard Henn estimated from the tickets he collected that the train carried 127 to 131 adults, with an unknown number of children. However, he admitted his tickets would not show the total number of passengers on the train at the time of the

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Modern analyzes of the bridge collapse conclude that the railway had inadequately inspected and maintained the bridge. Åkesson, however, says that better inspection of the bridge may not have prevented a collapse. An inverted Howe truss puts the superstructure below the track, where it is difficult

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Gasparini and Fields conclude that the bridge might have survived the loss of the lug had the chords and diagonals been made stronger through active continuous connection. Active continuous connection was not used on the bridge: The members of the chords were connected to angle blocks at only every

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Poor construction of the bridge's diagonals worsened the stresses placed on the lugs on the angle blocks. Howe trusses rely on prestressing of braces and counter-braces to improve the way the bridge carries load. Tightening the nuts on the vertical posts (prestressing) puts the verticals in tension

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There were significant errors in construction. The members making up the braces were not connected to act in unison, greatly reducing the bridge's ability to carry a live load. In the lower chord, lateral braces were placed only at every other panel connection, extended across two panels (not one),

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As the "Socrates" neared the western abutment, engineer Daniel McGuire heard a crack and felt his locomotive drop slowly downward. Realizing the bridge was collapsing beneath him, he opened the throttle to maximum. The "Socrates" lurched ahead, just as the weight of the 11 cars began to pull on the

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The Ashtabula River bridge was erected in 1865 using Stone's design and plans and partly under his supervision. Tomlinson was the bridge's original construction supervisor, but Stone said he fired him for "inefficiency" at some point during the bridge's construction. Tomlinson was replaced by A. L.

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Nash gives the composition of the train as four baggage cars, two coaches, three sleeping cars, a parlor car, and a smoking car. Orth says the train consisted of two baggage cars, two coaches, two express cars, three sleeping cars, a dining car, and a smoking car, while Bellamy says there were two

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Gasparini and Fields noted that Rogers had prestressed the bridge very tightly before the falsework was moved. Rogers admitted that this buckled a few diagonals even before the falsework was removed. Although Rogers then loosened the vertical posts to eliminate visible buckling, the diagonals were

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The alarm bell from the Lake Street Fire House which was used to call for help on the night of December 29 has also been preserved. It passed into private hands, but was donated to the city of Ashtabula in 1975. It is now on display in front of the city's Main Avenue fire station, accompanied by a

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The crash was heard at the railroad's W. 32nd Street Station (just 100 yards (91 m) to the west of the bridge) and in the town, and the alarm was raised. Rescuers first on the scene included railroad employees, those waiting on the platform at the station, and residents of Ashtabula who lived

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The second express car and the two baggage cars landed largely upright, slightly south of the bridge. The second baggage car was slightly askew, its nose resting against the western abutment and its rear pointing southeast. Most of the bridge's upper chord (the bottom of the bridge) crashed to the

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bridge without incident, heading east. The bridge over the Ashtabula River was about 1,000 feet (300 m) east of the Ashtabula station, and the locomotives shut off their steam (cutting off power to the drive) about 66 to 99 feet (20 to 30 m) east of the bridge to allow the train to glide

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To correct this problem, Stone added more iron I-beams to the diagonals to strengthen them. The placement, size, and number of beams added is not clear, but Stone likely added two I-beams to the brace in the end panel, two I-beams to the brace in the first panel from the end, and one I-beam to the

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Stone made additional changes to the design. In a Howe truss bridge, the vertical posts connect the upper and lower chords (main parallels) in the truss. The deck on which the train travels usually hangs from these posts; the greater the live load, the greater the tension on the posts. The bracing

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of the bridge collapse: (1) the failure of an angle block lug on the west end of the bridge due to fatigue (caused by bending and shear stress), (2) thrust stress from improperly fitting chords and diagonals, and (3) low temperatures, which caused the cast iron angle blocks to become brittle. The

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Identification of the dead took a week or more. There were full or partial remains of about 36 bodies in the railroad freight house, with concerned families encouraged to come by and try to identify corpses. For several days after the wreck, townspeople and railroad employees used their hands and

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were hauling two baggage cars, two day-passenger coaches, two express coaches, a drawing room car (the "Yokohama"), three sleeper cars (the "Palatine", which originated in New York City and was bound for Chicago; the "City of Buffalo", which originated in Boston and was bound for Chicago; and the

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The bridge was prestressed again. In every other panel connection, the diagonal braces were fitted to the angle blocks using shims rather than by tightening the vertical posts and putting the diagonals under compression. This meant that the shims carried the weight of a live load, rather than the

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to support construction of a bridge with a 5-to-7-inch (130 to 180 mm) camber. Stone, now himself supervising Rogers' work, ordered the camber reduced to 3.5 inches (89 mm). With the members of the upper chord now too long, Rogers had the bearings shaved down. It is clear Rogers ordered

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Civil engineer Charles MacDonald, who inspected the bridge's original plans in 1877, described and made drawings of part of the angle blocks. He noted that the vertical posts were made of iron pipe 3 inches (76 mm) in diameter with a wall 0.5 inches (13 mm) thick. Inside the pipe ran an

327:, a well-known bridge builder and designer, was hired to flesh out Stone's design and create the fabrication drawings for all the bridge components. Tomlinson designed the bridge's lower chord to have a camber of 6 inches (150 mm). When the falsework supporting the bridge was removed and the 941:

Initially, the mass grave of unidentified remains in Chestnut Grove Cemetery was unmarked. Local citizens began an effort to erect a monument on the site in 1892, and the Ashtabula Bridge Disaster Monument was dedicated on May 30, 1895, before a crowd of 5,000 people. The names of 25 individuals

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MacDonald described (but did not publish a drawing of) the angle blocks at the bottom of the bridge. The bottom of the rod in the vertical posts screwed into these angle blocks. The members of the chord at the bottom of the bridge were flat bars, not I-beams, each bar measuring 5 by 0.375 inches

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Because Amasa Stone used an inverted Howe truss, the upper chord was at the bottom of the bridge. This article uses the term "upper chord" to refer to the chord at the bottom of the bridge. Sources often use the term "upper chord" to refer to the chord at the top of the bridge, but this article

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The angle blocks were made of cast iron, which Åkesson says was appropriate, for the angle blocks were in compression. The vertical lugs atop the angle blocks in the upper chord of the bridge received shear stress, but this should have been minimal as shear stress was only induced by one of the

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The number of people killed in the Ashtabula bridge disaster will never be known. The number could be as low as 87 or as high as 200, although the official count is 92 dead. Another 64 people were injured. The number of deaths is inexact, in part because the number of passengers on the train is

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The coroner's report found that the bridge, located about 1,000 feet (300 m) from the railway station, had been improperly designed by the railroad company president, poorly constructed, and inadequately inspected. As a result of the accident, a hospital was built in the town and a federal

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Brockman says that the design changes were made with the assistance of A. L. Rogers, a carpenter with no bridge design or construction experience. Civil engineer Björn Åkesson points out that, since all-iron Howe trusses were so rare at the time, the use of a carpenter should not be considered

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hung in the air, but the forward movement of the "Socrates" pulled the tender forward and it regained the rails and solid ground. McGuire brought the "Socrates" to a halt about 100 yards (91 m) down the track, and began repeatedly sounding his whistle and ringing the train bell in alarm.

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MacDonald visited the scene of the disaster a few days after the bridge's collapse and made extensive drawings and notes. He made a copy of the bridge's building plan (then in the possession of John Newell, the railroad's general manager), and read through the bills of sale to determine what

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Thieves moved among the dead and wounded, stealing money and valuables. A large crowd of the curious gathered at the wreck site the next morning, and some in the crowd looted the train until Ashtabula's mayor, H. P. Hepburn, stationed a guard at the site. Some of the money and valuables were

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Amasa Stone was held personally responsible for the bridge's poor design, and the railroad company for the lax inspection of the bridge and the failure to use self-extinguishing heating apparatus. G.W. Knapp was held personally responsible for failing to fight the fire in a timely fashion.

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A burial service for the unidentified dead was held at Ashtabula's Chestnut Grove Cemetery on January 19, 1877. A mile-long procession conveyed the dead to the cemetery. The railroad purchased a burial plot in which 18 coffins, containing the remains of an estimated 22 people, were placed.

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The legislative joint committee drafted a bill that would have created Ohio's first bridge design code, required professional oversight of bridge construction, and mandated expert, frequent, regular inspections by civil engineers. The Ohio state legislature declined to act on the bill.

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The critical issue, Åkesson says, is that the broken lug on the southern angle block atop the joint between the second and third panel had a void. The void itself weakened the integrity of the block. Voids also encourage the formation of large grains and can accumulate impurities like

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Gasparini and Fields note that the alterations to the diagonal lugs and I-beams probably did lessen the strength of each diagonal. However, since Stone added more I-beams, the overall strength of the bridge was improved and the changes did not contribute to the bridge's

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In retrospect, Gasparini and Fields say, the point where the lug transitioned to the main body of the angle block was extremely problematic. The solidification rates of the molten iron were so different, this was a likely site for the formation of cracks or voids.

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express car fell into the ravine, crashing nose-first into the ground at the base of the abutment. The "Columbia" slipped backward off the abutment, landing upside-down and backward atop the first express car. It then fell onto its side, its trucks pointing north.

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The Lake Shore & Southern Michigan Railway was formed on April 6, 1869. Many sources say that the LS&MS built the bridge over the Ashtabula River, but these sources appear to be using a form of literary shorthand—using the company's better-known later

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and were not connected to one another where they crossed. The sway braces were too small to prevent sway, and placed only at every other panel as well. Neither the braces nor counter-braces were attached to the angle blocks, and their ends were not square.

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MacDonald and Gasparini and Fields noted that the diagonal I-beams were designed to connect to both the upper and lower angle blocks with the flanges of the I-beam in a vertical position. The web of the I-beam fit into a horizontal slot between two lugs.

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baggage cars, two "passenger cars", two express cars, three sleeping cars, and a smoking car. The Ohio legislature's official report on the accident said there was one baggage car, four coaches, two express cars, three sleeping cars, and one smoking car.

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Report of the Joint Committee Concerning the Ashtabula Bridge Disaster Under Joint Resolution of the General Assembly. Journal of the House of Representatives of the State of Ohio, for the Adjourned Session of the Sixty-Second General Assembly. Volume

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wreck. Many who survived the crash burned to death in the wreckage. The accident killed approximately 92 of the 160 people aboard. It was the worst rail accident in the U.S. in the 19th century and the worst rail accident in U.S. history until the

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Sources vary widely on how far behind schedule the train was: About one hour, one hour and 8 minutes, two hours, two and a half hours, and four hours. The LS&MS railroad timetable, however, shows that the train was due to depart Erie at 3:45

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Railroad bridge inspectors did not perform their jobs adequately. Inspectors should have noted the severe deficiencies in the bridge's design and construction, and did not. They also should have observed problems with members becoming loose over

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in attempting to protect the railroad while also carrying out his public duties. His authority was deeply undermined by this, and his orders were disregarded, not implemented immediately, or questioned by townspeople, police, and railroad

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civil engineers employed by the joint committee, argued that the lower chord (top of the bridge) at the joint between the second and third panels gave way. The three continuous I-beam members, he concluded buckled outward at this point.

856:, caused the lug to fail. Metal fatigue was an issue in cast and wrought iron which only a few metallurgists and engineers were aware of in the 19th century. The failure of this lug on this angle block caused the entire bridge to fail. 503:

The No. 5 was due to arrive in Cleveland at 7:05 PM, but at about 7:30 PM it was just reaching Ashtabula—an hour and 53 minutes behind schedule. About half an hour earlier, the No. 8 passenger train of the LS&MS passed over the

898:

to see and inspect, and the angle blocks were hidden by the surrounding I-beams. Better inspection may have corrected some construction errors and identified falling shims, but might not have improved the bridge's survivability.

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began hitting northern Ohio, northwest Pennsylvania, and western New York two days earlier. More than 20 inches (510 mm) of snow had already fallen, and winds 24 to 54 miles per hour (39 to 87 km/h) were creating heavy

576:

near the bridge. The only access to the valley floor was a set of steep, narrow steps, covered in snow. Most people slid down the steep incline rather than take the steps, and several people brought axes to help free survivors.

487:"Osceo", a sleeper for passengers going to St. Louis), and a smoking car with about 150 to 200 passengers and 19 crew aboard. Two additional locomotives were needed to push the train away from the station due to the heavy snow. 432:

Upon completion, the bridge was tested by having three locomotives run over the bridge at speed. A second test had the three engines stand still on the bridge. Deflection was minimal and the bridge rebounded satisfactorily.

299:

were made by the mill. The mill also provided raw iron to the CP&A, which then made the cast and wrought iron elements according to the fabrication plans. Shop master mechanic Albert Congdon oversaw this latter work.

965:

Two official autopsies, both conducted in 1878, concluded that Collins had been murdered. For unknown reasons, law enforcement officials did not release these reports at the time. The reports were rediscovered in 2001.

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to the braces and counter-braces). The bridge was apparently designed for a non-moving live load, and little evidence existed to show it was designed to accommodate jarring, oscillation, vibration, or the force of wind.

642:

Three coffins with three corpses remained at the freight house in the hope that they could still be identified. When these remains went unclaimed, they were buried about a week later in the same plot at Chestnut Grove.

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Concern that the city lacked medical care for the victims of the bridge disaster, citizens of Ashtabula began raising money to build a hospital in their town. An emergency care clinic opened in 1882, followed by

594:

The darkness and blinding snow made it difficult for surviving passengers to orient themselves and get out of the wreck. A number of passengers drowned in the river, while others escaped the blaze only to die of

1370:Åkesson concludes that buckling during the removal of the falsework indicates an improper fit between the diagonals and the angle blocks, and to a lack of control over how much prestressing was actually induced. 731:

adopted a joint resolution appointing a committee to investigate the causes of the Ashtabula River bridge collapse, and to make recommendations to the legislature. The committee consisted of five members of the

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materials had actually been delivered. About a month later, he re-examined the wreckage of the bridge (by this time, it had been removed to the LS&MS shops in the Collingwood neighborhood of Cleveland).

4328:

Annual Report of the Commissioner of Railroads and Telegraphs of the State of Ohio, With Tabulations and Deductions From Reports of the Railroad Corporations of the State, for the Year Ending June 30, 1868

316:

Amasa Stone's bridge was, by his own admission, experimental. He had constructed only one all-iron Howe truss bridge before, a 5-foot (1.5 m) high, 30-foot (9.1 m) long railroad bridge over the

513:

crossed the bridge, it was doing 10 to 15 miles per hour (16 to 24 km/h) (according to the locomotive engineers). Visibility was practically nonexistent, at most one or two car lengths.

810:

Although the LS&MS refused to accept responsibility for the disaster, it paid out more than $ 500,000 ($ 14,300,000 in 2023 dollars) to victims and their families to quiet legal claims.

611:

for anyone else who turned over stolen items. Money and valuables worth about $ 1,500 ($ 42,919 in 2023 dollars) were collected, but most of the stolen money and goods were never recovered.

417:

When the falsework was removed a second time, the bridge buckled where the vertical posts connected to the deck. Several diagonals also buckled. Once more, the falsework went back in place.

1351:

A one-paragraph technical note, clarifying the weight of locomotives running over the bridge from its erection to its completion, was added by James Sedgley, the railroad's master mechanic.

659:

At dawn on December 30, Ashtabula resident Fred W. Blakeslee took photos of the wrecked bridge and train. These provide the most extensive documentation of the wreck known as of 2003.

284:

bridge, a commonly used type of railroad bridge, and personally designed the new bridge. The longest span was 154 feet (47 m) long and 76 feet (23 m) above the river below.

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The chords, braces, and counter-braces were all made of I-beams. The vertical posts were made of rod. Each I-beam was 6 inches (150 mm) thick and 8 inches (200 mm) wide.

250: 378:

It is also known that, at the ends of the bridge, only half of each angle block received load because Stone used only a single diagonal in the end panel. This put enormous

1137:

Brockman says that turning the beams so the flanges were horizontal actually weakened the ability of the braces to reinforce the bridge, indicating Congdon was incorrect.

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on the railroad tracks 6 feet (1.8 m) deep in places. The snow was so heavy that, shortly after leaving Buffalo, a second engine was added to help pull the train.

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The volunteer Lake Erie Hose Company was a city-sponsored fire-fighting unit located on Lake Avenue and Depot Street (now W. 32nd Street), adjacent to the train depot.

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One design for a half-angle block. The attached chord puts immense downward (shear) stress on one side of the block only, for which the block is not designed.

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The coroner's jury held that the failure of the south half-angle block at the joint between the first and second panels was where the bridge collapse began.

1244:

More people survived from the first passenger coach than any other car, because it landed upright and because it was not hit by any other part of the train.

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The river valley varied in depth from 70 to 135 feet (21 to 41 m), which may account for the discrepancy in sources regarding how far the train fell.

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A third investigation was conducted independently by civil engineer Charles MacDonald, who likely was commissioned to study the bridge's collapse by the

743:

The legislative joint committee issued its report on January 30, 1877. The committee blamed the collapse of the Ashtabula River bridge on three factors:

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surprising. Amasa Stone, however, said in 1877 that Rogers only had supervision of construction. Rogers himself denied designing any of the bridge.

1096:

A gib-plate is a "plate or strap which holds in place the piece to which it is fastened and yet leaves it free to move in a prescribed direction."

1271:

Both were all-volunteer fire fighting units sponsored by the city. Protection Fire was located on Main Avenue, and Neptune Hose on Center Street.

949:

Letters from concerned friends and families seeking whether loved ones had survived are archived at the Jennie Munger Gregory Memorial Museum at

783:

Improper inspection by railroad officials. He noted, however, that the LS&MS was not alone in infrequent inspection by largely untrained men.

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Neither the joint committee, nor the coroner's jury, nor any of the engineers employed by them identified the flaw in the angle block casting.

402:

When construction began, Tomlinson observed that the I-beams intended for use as diagonals were smaller than the fabrication plans called for.

3752: 632:

people seeking gold watches, jewelry, or other items as "loot". Fraudulent letters tended to be spotted fairly easily, and were not answered.

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Journal of the House of Representatives of the State of Ohio, for the Adjourned Session of the Sixty-Second General Assembly. Volume LXXIII

4396:

Journal of the House of Representatives of the State of Ohio, for the Adjourned Session of the Sixty-Second General Assembly. Volume LXXIII

1333:

hired by the joint committee, concluded that no braces had moved out of position since the bridge had last been painted two years earlier.

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The patented Howe truss bridge design used wooden beams for the diagonal and horizontal members, and iron posts for the vertical members.

363:

Gasparini and Fields claim that the exact design of the angle blocks and the ends (the "bearings") of the diagonals are lost to history.

359:

The chord, diagonals, angle blocks, and vertical posts of the Ashtabula Bridge, as drawn from original plans by Charles MacDonald in 1877

1049:"Camber is an upward curvature given to a beam or girder, or some line in it, in order to ensure its horizontality when fully loaded." 517:"Columbia" behind it. The connection between the two locomotives snapped, enabling the "Socrates" to make it off the bridge. The rear 1022:

It is unclear if Stone or Tomlinson set the bridge's height-to-span ratio or the number of panels, or designed its connection points.

978: 269:

was president of the CP&A. His construction firm had built the CP&A main line from 1850 to 1852, and Stone had purchased the

1165:

Railroad into the LS&MS, which placed the line from Chicago to Buffalo under the control of a single company for the first time.

254: 229: 136: 1262:

The railroad's policy was to let a train burn. The policy was not made with the possibility that passengers could still be aboard.

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The weight of the engines was estimated at 40 short tons (36 t) each in 1887, but at 30 short tons (27 t) each in 1993.

538:

Postcard photo of the wreck. The view is toward the west abutment; the locomotive "Columbia" can be seen in the wreckage at left.

3959:

Twisted Rails, Sunken Ships: The Rhetoric of Nineteenth Century Steamboat and Railroad Accident Investigation Reports, 1833–1879

4835: 988: 4496:, from the Ashtabula Historical Railroad Foundation. Web site includes pictures of the bridge before and after the collapse. 4787: 607:

discovered following investigations by local police, and a few arrests made. Hepburn later issued a proclamation promising

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An inadequate knowledge of the strength of iron. The whole industry suffered from a lack of this knowledge, he wrote.

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known to have died in the fire but whose remains could not be found are listed on a plaque on the memorial's base.

930:, cast iron was banned by civil engineers for use in load-carrying structures soon after the accident. About 1886, 827: 425:

braces themselves. It is also possible that the shims created uneven contact, causing angle blocks to undergo both

4859: 691:

had too few and poorly designed lugs, which did not keep the braces and counter-braces from slipping out of place.

4853: 4823: 4769: 4557: 3328: 920: 4003:

Disasters, Accidents, and Crises in American History: A Reference Guide to the Nation's Most Catastrophic Events

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Seventh Annual Report of the Commissioner of Railroads and Telegraphs of Ohio for the Year Ending June 30, 1873

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The five members were held together at each panel connection by two bolts running through the web of the beams.

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Ohio: A Four-Volume Reference Library on the History of a Great State. Volume 3: Historical Gazetteer of Ohio

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The railroad failed to use self-extinguishing heating stoves, as required by state law passed on May 4, 1869.

686:

The coroner's jury blamed the collapse of the Ashtabula River bridge and the deaths by fire on five factors:

4593: 3340: 344: 4733: 4709: 4679: 4150:

Hamilton, Barbara J. (2003). "Who's Who?: Identifying Victims of the Disaster". In Corts, Thomas E. (ed.).

2682: 2680: 2678: 2238: 2236: 2234: 848:, both of which also increase the brittleness of iron. The void also worsened stress on the block through 4745: 4569: 679: 4260: 4111: 3316: 3304: 3292: 2873: 1517: 4661: 2675: 2663: 2487: 2248: 2231: 931: 567: 4250: 4098:

Gasparini, Dario A.; Fields, Melissa (May 1993). "Collapse of Ashtabula Bridge on December 29, 1876".

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Travelers' Official Guide of the Railway and Steam Navigation Lines in the United States and Canada

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was adopted by the railroad, replacing the wood and coal stoves in passenger cars. As part of the

586:

The response by the Ashtabula Fire Brigade was minimal. G.W. Knapp, the city's fire chief, was an

405:

The amount of camber created a problem during construction. At Congdon's suggestion, Rogers built

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Darkest Hours: A Narrative Encyclopedia of Worldwide Disasters From Ancient Times to the Present

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Bliss and Tragedy: The Ashtabula Railway-Bridge Accident of 1876 and the Loss of P. P. Bliss

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Bliss and Tragedy: The Ashtabula Railway-Bridge Accident of 1876 and the Loss of P.P. Bliss

4152:

Bliss and Tragedy: The Ashtabula Railway-Bridge Accident of 1876 and the Loss of P.P. Bliss

4043:

Bliss and Tragedy: The Ashtabula Railway-Bridge Accident of 1876 and the Loss of P.P. Bliss

3897:

Cleveland's Greatest Disasters! 16 Tragic True Tales of Death and Destruction: An Anthology

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The committee found no defects in materials, and rejected the idea that application of the

328: 962:

committed suicide out of grief and feeling partially responsible for the tragic accident.

719: 8: 4655: 4617: 4366: 831:

failure of the angle block caused the upper chord to buckle, and the bridge to collapse.

318: 4499: 4217: 3346: 3334: 3322: 3310: 3298: 2879: 2686: 2669: 2493: 2254: 2242: 1734: 1128:

likely very close to their buckling load—even though no live load was yet on the bridge.

938:, a federal system was set up in 1887 to formally investigate fatal railroad accidents. 291:(then known as Stone, Chisholm & Jones Company), an iron and steel company based in 4268: 4169:

Hamilton, Darrell E. (2003). "Almost the Perfect Disaster". In Corts, Thomas E. (ed.).

4001: 3978: 853: 475: 44: 4041:

Corts, Thomas E. (2003). "The Loss of Bliss in Ashtabula". In Corts, Thomas E. (ed.).

1146:

Brockman says that workers incorrectly installed the I-beam braces during repair work.

355: 4900: 4411: 4381: 4312: 4293: 4235: 4204: 4174: 4155: 4136: 4115: 4084: 4065: 4046: 4027: 4008: 3985: 3962: 3943: 3922: 3901: 3863: 3129: 1937: 926:

Several other changes were also made in the wake of the accident. Because of its low

761: 675: 534: 459: 4667: 4445: 4441: 4331: 4256: 4107: 3886: 3882: 596: 906: 4948: 4871: 4493: 4481: 4426: 4405: 4394: 4344: 4219: 4198: 4078: 3937: 3916: 3895: 3857: 3821: 1931: 1884: 1106: 505: 462:, at 2 PM on December 29, 1876, 1 hour and 8 minutes behind schedule. A powerful 262: 258: 225: 221: 88: 1109:

which is screwed into a threaded (or "tapped") hole rather attached using a nut.

4129: 4980: 4763: 4575: 4486: 4342: 4335: 4325: 4119: 2166: 1412: 1295:

that all these stories are false: Bliss never made it out of the wreck alive.

522: 495: 411: 116: 103: 4385: 1314:

inverts the terminology used by sources where needed for consistency's sake.

490: 37: 616: 478:, at 5:01 PM, an hour and 16 minutes behind schedule. Its two locomotives, 379: 5012:

Accidents and incidents involving Lake Shore and Michigan Southern Railway

4069: 635:

Wreck investigators were still turning up remains as late as mid-January.

563:

1878 drawing based on a January 1877 photograph of the ruins of the bridge

969:

Collins was buried in an elaborate mausoleum at Chestnut Grove Cemetery.

737: 559: 266: 237:. However, it remains the Third-Deadliest rail accident in U.S. history. 4440:. Philadelphia: National General Ticket Agents' Association. June 1870. 2966:"Statement and Verdict of the Coroner's Jury on the Ashtabula Disaster" 1174:

This was the third major blizzard to hit the area in less than a month.

714: 587: 281: 4640: 4460: 4436:"Travelers' Official Railway Guide for the United States and Canada". 1491: 807:

may have hit the bridge, causing it to come loose from the abutments.

454:

Train No. 5 of the Lake Shore and Michigan Southern Railway, known as

4469: 4435: 2405: 927: 468: 406: 341: 292: 866: 4040: 3595: 3200: 3198: 3135: 2371:

Joki, Virginia Carville (February 1954). "The Ashtabula Disaster".

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Frozen ground had caused a lengthy delay before burial could occur.

580: 463: 441: 390: 19:"Ashtabula Bridge" redirects here. For the present-day bridge, see 4022:

Corts, Thomas E. (2003). "Appendices". In Corts, Thomas E. (ed.).

3558: 3556: 3554: 3552: 3550: 3510: 3508: 3282: 3280: 3278: 3276: 1984: 883: 651: 429:

and shear stress. Nevertheless, the bridge did not sag this time.

295:, Ohio, which was managed by his older brother, Andros Stone. The 4218:

Joint Committee Concerning the Ashtabula Bridge Disaster (1877).

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Stone also decided to award the contract for the ironwork to the

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system set up to formally investigate fatal railroad accidents.

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Train Wrecks: A Pictorial History of Accidents on the Main Line

3643: 3619: 3547: 3535: 3505: 3388: 3352: 3273: 3050: 3040: 3038: 3036: 3034: 2918: 2916: 2914: 2912: 2861: 2839: 2837: 2835: 2833: 2831: 2829: 2827: 2735: 2733: 2731: 2729: 2727: 2554: 2544: 2542: 2540: 823: 296: 270: 4371:. Chicago: J.S. Goodman – Louis Lloyd & Co. 2354: 2352: 2350: 2348: 2346: 2344: 2342: 2300: 2298: 2296: 2085: 1996: 1847: 1714: 1685: 1558: 852:. Gasparini and Fields conclude that this void, combined with 813: 308: 4330:. Columbus, Ohio: Columbus Printing Company, State Printers. 4021: 3918:

Trains and Technology. Volume 4: Bridges and Tunnels, Signals

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