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end to end, having two pins on the top of each tower and carrying the roadway by 4" eye-bar suspenders at the panel points. The stiffening system consists of triple web-plate girders parallel to the road grade. The girders are subjected to stresses due to bending combined with direct compression.
377:
bridges, which include the 7th and 9th Street bridges. The three bridges are nearly identical self-anchored, eye-bar suspension types. The horizontal pull of the top cords is resisted by the steel girders along each side of the roadway. The suspension system consists of 14" eye-bars extending from
335:
This bridge had two main spans of 343 feet (105 m), with shore spans of 179 feet (55 m). The floors were suspended from wire hangers, which were suspended from wire catenaries. This bridge was demolished in 1892, as it was too narrow and fragile to support modern transportation demands.
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352:
In 1927 the bridge had to be taken apart because the steelwork was too brittle for safety. That year, the main spans were somewhat trimmed down temporarily from their 80-foot (24 m) height. They were lowered onto barges and floated down the
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1321:
485:
468:, in cooperation with the Riverlife Task Force, the City of Pittsburgh, and Duquesne Light Company, funded and managed the architectural lighting of the bridge. On November 20, 2002, the bridge was lit for the first time.
1316:
1498:
1976:
1681:
348:
for the Union Bridge
Company. The main spans were 440 feet (130 m) long, each having through trusses of the camel-back type with upward-angled upper chords. The spans were twice as wide as the previous bridge.
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2018:
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211:
1966:
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2008:
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2013:
1956:
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The Sixth Street Bridge's piers were built with arched openings beneath the river bed to accommodate future subway tunnels, following the recommendation of transportation planner
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and are significant because they are the only trio of nearly identical bridges—as well as the first self-anchored suspension spans—built in the
549:
858:
730:
427:
tunnels completed in 2012 did not make use of this provision but were bored further west (downstream) and did not pass beneath the bridge.
2114:
2094:
1720:
465:
52:
385:/deck girder system into a truss by adding a diagonal to enable erection by a balanced cantilever. This avoided falsework in the river.
616:
2099:
2079:
381:
All three bridges were fabricated and erected by
American Bridge (AB). In an innovative approach, AB temporarily turned the eye-bar
490:
430:
The bridge was formally renamed on August 6, 1998 after
Clemente, who played his entire career with the Pirates and was killed in
362:
1194:
986:
1753:
1770:
926:
202:
2074:
696:"Pittsburgh Sports Report: Clemente Bridge: Too Much or Too Little? Ariba's Popularity Extends From Fans to Collectors"
752:
Three
Sisters Bridges, Sixth Street Bridge, Spanning Allegheny River at Sixth Street, Pittsburgh, Allegheny County, PA
656:
1081:
1001:
851:
1731:
1031:
916:
442:. Before the naming rights were sold, Pittsburgh's popular sentiment was to name the park itself after Clemente.
409:
2069:
461:, was placed at the southeast corner of the park, right at the north anchorage of the Roberto Clemente Bridge.
103:
867:
510:
1128:
1123:
921:
814:
640:
Pittsburgh. (2010). In The
Hutchinson Unabridged Encyclopedia with Atlas and Weather guide. Retrieved from
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754:", 15 photos, 1 color transparency, 8 measured drawings, 2 photo caption pages
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565:""On Repairing the Cables of the Allegheny Suspension Bridge at Pittsburgh, Pa., U.S.A.""
446:
329:
36:
1111:
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394:
486:
List of bridges documented by the
Historic American Engineering Record in Pennsylvania
229:
1716:
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996:
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345:
280:
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420:
358:
301:
457:. When PNC Park was built, a statue of Roberto Clemente, erected initially at
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332:
worked with him on the bridge after completing his degree in engineering.
316:
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373:
The current bridge was completed on
September 29, 1928. It is one of the
2085:
Road bridges on the
National Register of Historic Places in Pennsylvania
751:
653:
762:
354:
305:
603:. Pittsburgh, PA: Pittsburgh History & Landmarks Foundation, 1999.
518:. Pittsburgh, PA: Pittsburgh History & Landmarks Foundation. 2010
328:. This was his third and final bridge in Pittsburgh. His eldest son
450:
397:
127:
538:"The Reconstruction of the Sixth Street Bridge at Pittsburgh, Pa"
2090:
Pittsburgh
History & Landmarks Foundation Historic Landmarks
1226:
569:
Minutes of the
Proceedings of the Institution of Civil Engineers
1766:
1762:
542:
Proceedings of the Engineers' Society of Western Pennsylvania
344:
In 1892, the third Sixth Street Bridge was built by engineer
320:
Roebling's second version (1859) of the Sixth Street Bridge.
434:. This was part of a compromise after the Pirates sold the
652:
Historic American Engineering Record (HAER) No. PA-490,
642:
http://www.credoreference.com/entry/heliconhe/pittsburgh
1171:
US National Register of Historic Places in Pennsylvania
932:
Pittsburgh & Steubenville Extension Railroad Tunnel
308:. It was built in 1819 by a contractor named Lothrop.
866:
475:
Plaque on the North Shore of the Sixth Street Bridge.
324:
In 1859, the second Sixth Street Bridge was built by
2105:
Historic American Engineering Record in Pennsylvania
779:
1200:
History of the National Register of Historic Places
2110:National Register of Historic Places in Pittsburgh
601:Pittsburgh's Bridges: Architecture and Engineering
445:It is closed to vehicular traffic on Pirates' and
16:Bridge in Pittsburgh, Pennsylvania, United States
2061:
1747:
1155:
852:
404:, it is one of three parallel bridges called
300:The original bridge at the site was a wooden
416:. Over 720 bridges link the city districts.
562:
466:Pittsburgh History and Landmarks Foundation
449:game days, providing a pedestrian route to
365:. Finally, in 1994 the steel was scrapped.
1754:
1740:
1162:
1148:
859:
845:
611:
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203:U.S. National Register of Historic Places
491:List of crossings of the Allegheny River
470:
315:
606:
535:
2062:
1735:
1143:
840:
778:
693:
1771:National Register of Historic Places
1673:Native American archaeological sites
927:Pittsburgh and Castle Shannon Tunnel
748:Historic American Engineering Record
512:Historic Landmark Plaques 1968-2009
13:
2115:Steel bridges in the United States
2095:Suspension bridges in Pennsylvania
706:from the original on 19 April 2016
14:
2131:
741:
694:Flinn, Stephen (September 1998).
680:, August 6, 1998, front page and
368:
2100:Self-anchored suspension bridges
2080:Bridges over the Allegheny River
1715:
1706:
1705:
1225:
1218:
1082:Senator Robert D. Fleming Bridge
1032:Glenwood B&O Railroad Bridge
1002:Charles Anderson Memorial Bridge
955:
818:
552:from the original on 2018-05-07.
410:self-anchored suspension bridges
363:as part of the Coraopolis Bridge
311:
29:
917:Mount Washington Transit Tunnel
623:from the original on 2016-06-03
388:
339:
304:with six spans, probably using
295:
700:www.pittsburghsportsreport.com
687:
666:
646:
634:
593:
556:
529:
503:
224:
178:
1:
1668:European archaeological sites
790:
563:Collingwood, Francis (1884).
496:
438:to PNC Park to locally based
106:, Pennsylvania, United States
68:40.445599833°N 80.003299833°W
922:North Shore Connector tunnel
815:North Shore Connector tunnel
725:Clemente Bridge Dedication:
674:"Now it's Clemente's bridge"
7:
1688:National Historic Landmarks
982:33rd Street Railroad Bridge
750:(HAER) No. PA-490-A, "
737:. Retrieved April 23, 2006.
479:
73:40.445599833; -80.003299833
10:
2136:
1022:Fort Wayne Railroad Bridge
290:
212:Pittsburgh Landmark – PHLF
2075:Bridges completed in 1928
1777:
1701:
1660:
1597:
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1092:South Tenth Street Bridge
964:
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1087:Smithfield Street Bridge
581:10.1680/imotp.1884.21658
408:. The Three Sisters are
285:Pittsburgh, Pennsylvania
165:884 ft (269 m)
1107:Roberto Clemente Bridge
1007:David McCullough Bridge
805:Roberto Clemente Bridge
758:Roberto Clemente Bridge
727:Pittsburgh Post-Gazette
723:Johanna A. Pro (1999).
678:Pittsburgh Post-Gazette
654:"Three Sisters Bridges"
361:, where they were used
357:to the back channel of
273:Roberto Clemente Bridge
114:Roberto Clemente Bridge
23:Roberto Clemente Bridge
1190:Keeper of the Register
1047:Homestead Grays Bridge
536:Wilkins, W.G. (1895).
476:
440:PNC Financial Services
321:
173:78 ft (24 m)
2070:Bridges in Pittsburgh
1205:National Park Service
1185:Contributing property
1072:Panther Hollow Bridge
824:Pittsburgh Light Rail
474:
425:North Shore Connector
319:
1117:Rachel Carson Bridge
1042:Highland Park Bridge
1012:Fort Duquesne Bridge
942:Squirrel Hill Tunnel
771:at BridgeMeister.com
459:Three Rivers Stadium
275:, also known as the
249:Designated PHLF
1062:McKees Rocks Bridge
330:Washington Roebling
277:Sixth Street Bridge
122:Sixth Street Bridge
64: /
37:Downtown Pittsburgh
1112:Andy Warhol Bridge
987:40th Street Bridge
977:31st Street Bridge
972:30th Street Bridge
799:Andy Warhol Bridge
733:2020-02-18 at the
659:2017-02-03 at the
599:Kidney, Walter C.
477:
432:a 1972 plane crash
395:Pittsburgh Pirates
322:
39:in the background.
2057:
2056:
1729:
1728:
1195:Historic district
1137:
1136:
1037:Greenfield Bridge
997:Birmingham Bridge
992:Bloomfield Bridge
834:
833:
829:
828:
780:Crossings of the
575:(1884): 334–345.
406:The Three Sisters
287:, United States.
269:
268:
236:Significant dates
156:Suspension bridge
2127:
2120:Roberto Clemente
2034:Washington, D.C.
1756:
1749:
1742:
1733:
1732:
1719:
1709:
1708:
1229:
1222:
1221:
1164:
1157:
1150:
1141:
1140:
1067:Panhandle Bridge
1052:Hot Metal Bridge
1017:Fort Pitt Bridge
959:
902:Fort Pitt Tunnel
887:Armstrong Tunnel
861:
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326:John A. Roebling
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133:Roberto Clemente
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1129:West End Bridge
1124:Veterans Bridge
1097:Swindell Bridge
1077:Schenley Bridge
1027:Glenwood Bridge
960:
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937:Schenley Tunnel
892:Cork Run Tunnel
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244:January 7, 1986
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147:Characteristics
95:Allegheny River
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56:40°26′44.1594″N
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1057:Liberty Bridge
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393:Named for the
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369:Current bridge
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359:Neville Island
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1999:South Dakota
1989:Rhode Island
1972:Pennsylvania
1952:North Dakota
1692:Philadelphia
1615:Philadelphia
1579:Westmoreland
1509:Philadelphia
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708:. Retrieved
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520:. Retrieved
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389:Significance
380:
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340:Third bridge
334:
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306:Burr trusses
299:
296:First bridge
283:in downtown
279:, spans the
276:
272:
270:
162:Total length
87:Sixth Street
1984:Puerto Rico
1902:Mississippi
1812:Connecticut
1721:NRHP portal
1661:Other lists
1620:Center City
1544:Susquehanna
1494:Northampton
455:Heinz Field
71: /
46:Coordinates
2064:Categories
2029:Washington
1937:New Mexico
1932:New Jersey
1802:California
1605:Pittsburgh
1569:Washington
1524:Schuylkill
1484:Montgomery
1429:Lackawanna
1409:Huntingdon
1359:Cumberland
1339:Clearfield
811:Downstream
763:Structurae
627:2015-09-17
586:2022-05-12
522:2024-01-04
497:References
355:Ohio River
2044:Wisconsin
2004:Tennessee
1897:Minnesota
1872:Louisiana
1645:Southwest
1635:Northwest
1630:Northeast
1610:Lancaster
1434:Lancaster
1419:Jefferson
1252:Armstrong
1247:Allegheny
447:Steelers'
128:Named for
104:Allegheny
2024:Virginia
1962:Oklahoma
1942:New York
1917:Nebraska
1907:Missouri
1892:Michigan
1882:Maryland
1867:Kentucky
1847:Illinois
1817:Delaware
1807:Colorado
1797:Arkansas
1711:Category
1539:Sullivan
1534:Somerset
1459:Lycoming
1439:Lawrence
1394:Franklin
1369:Delaware
1354:Crawford
1349:Columbia
1277:Bradford
795:Upstream
731:Archived
704:Archived
682:page A-8
663:, p. 36.
657:Archived
621:Archived
550:Archived
480:See also
451:PNC Park
398:baseball
383:catenary
261:Location
230:86000017
181:of spans
2049:Wyoming
2019:Vermont
1977:covered
1912:Montana
1852:Indiana
1827:Georgia
1822:Florida
1792:Arizona
1782:Alabama
1769:on the
1767:tunnels
1763:Bridges
1682:covered
1678:Bridges
1584:Wyoming
1559:Venango
1489:Montour
1474:Mifflin
1454:Luzerne
1444:Lebanon
1424:Juniata
1414:Indiana
1384:Fayette
1364:Dauphin
1344:Clinton
1334:Clarion
1312:Chester
1297:Cameron
1292:Cambria
1262:Bedford
965:Bridges
880:Tunnels
872:bridges
868:Tunnels
548:: 144.
400:player
291:History
92:Crosses
84:Carries
1967:Oregon
1922:Nevada
1862:Kansas
1837:Hawaii
1787:Alaska
1564:Warren
1529:Snyder
1519:Potter
1479:Monroe
1469:Mercer
1464:McKean
1449:Lehigh
1404:Greene
1399:Fulton
1389:Forest
1307:Centre
1302:Carbon
1287:Butler
1257:Beaver
1178:Topics
617:"Main"
423:. The
170:Height
152:Design
100:Locale
2009:Texas
1877:Maine
1842:Idaho
1640:South
1625:North
1574:Wayne
1554:Union
1549:Tioga
1504:Perry
1327:South
1322:North
1282:Bucks
1272:Blair
1267:Berks
1242:Adams
769:entry
710:7 May
516:(PDF)
2014:Utah
1957:Ohio
1857:Iowa
1832:Guam
1765:and
1650:West
1589:York
1514:Pike
1379:Erie
1317:East
870:and
712:2018
464:The
453:and
271:The
252:1988
1374:Elk
760:at
577:doi
225:No.
179:No.
2066::
702:.
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608:^
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184:3
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