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and put up by contractor
Lawrence Construction Company in 1933. The structure had length 134 feet (41 m) with main span length of 100 ft (30 m). Its superstructure was steel, rigid-connected camelback pony truss and its substructure included concrete abutments, wingwalls and piers.
120:
The bridges were deemed significant for representing transportation and for their preserved structure. Bridges I and II were removed from the
National Register on November 29, 2010. Delistings from the NRHP usually occur when a listed building or other structure is demolished or if its historic
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It has been termed a "lost bridge" because the original structure was mostly replaced, as documented in a 2005 photo which showed trusses still in place, but the span supported by a concrete pillar construction which would not have been part of the original bridge.
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integrity is otherwise severely compromised. Bridges III and IV have been substantially renovated in place so far that their camelback truss structures are entirely gone, but they currently remain on the
Register.
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and fabricated by
Midwest Steel & Iron Works. Bridges III and IV were put together by Lawrence Construction Company in 1933, and bridges I and II were put together by contractor M.E. Carlson four years later.
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A modern bridge is now located at the site; the truss structure is entirely gone as documented in 2012 photo. Though historic integrity is apparently gone, the bridge remains listed on the
National Register.
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The bridge was deemed worthy of historic designation largely for its engineering; like the others, it was a rigid-connected
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The four bridges were identified as conforming to terms defined for historic bridge notability as defined in a 2000 study.
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It has been substantially replaced by a non-truss bridge, though the
National Register listing has not yet been revoked.
28:, but since have lost most of their historic integrity. They were built in 1933 and 1937. All four were listed on the
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built of steel, and the four bridges represented the state's only surviving cluster of such bridges.
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It had a concrete deck with asphalt overlay. The site was modified c.1980 by addition of flex-beam
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662:"National Register of Historic Places Multiple Property Documentation: Highway Bridges in Colorado"
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As of 2012, the pony truss structure is entirely gone, as documented in its 2012 photo.
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The bridge, near Estes Park, had pedestrian sidewalks cantilevered from the outside.
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University and college buildings listed on the
National Register of Historic Places
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643:"National Register of Historic Places Registration: Big Thompson River Bridge III"
753:"National Register of Historic Places Registration: Big Thompson River Bridge IV"
751:
Office of
Archaeology and Historic Preservation, and Clay Fraser (May 21, 2002).
739:
723:"National Register of Historic Places Registration: Big Thompson River Bridge II"
721:
Office of
Archaeology and Historic Preservation, and Clay Fraser (May 21, 2002).
702:
Office of
Archaeology and Historic Preservation, and Clay Fraser (May 21, 2002).
641:
Office of Archaeology and Historic Preservation, and Clay Fraser (May 21, 2002).
353:
September 2012 photo of modern replacement bridge III lacking the truss structure
704:"National Register of Historic Places Registration: Big Thompson River Bridge I"
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bridge that was designed by the Colorado Department of Highways, fabricated by
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List of jails and prisons on the National Register of Historic Places
92:
Big Thompson River Bridge II, US 34 at milepost 66.22, Estes Park, CO
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Road bridges on the National Register of Historic Places in Colorado
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1286:
Transportation buildings and structures in Larimer County, Colorado
101:
Big Thompson River Bridge IV, US 34 at milepost 86.04, Loveland, CO
678:
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This bridge was structurally the same as its predecessor bridge.
1291:
National Register of Historic Places in Larimer County, Colorado
796:
392:
US 34 at milepost 85.15 (III), US 34 at milepost 86.04 (IV),
83:
559:
Bridge at site in 2012, with truss structure entirely gone
95:
Big Thompson River Bridge III, US 34 at milepost 85.15,
827:
History of the National Register of Historic Places
858:List of U.S. National Historic Landmarks by state
659:
1272:
1250:National Register of Historic Places portal
475:is a historic bridge built in 1933. It was a
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798:U.S. National Register of Historic Places
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378:U.S. National Register of Historic Places
154:U.S. National Register of Historic Places
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32:in 2002, and two were delisted in 2010.
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679:"National Register Information System"
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684:National Register of Historic Places
660:Clayton B. Fraser (March 30, 2000).
30:National Register of Historic Places
729:accompanying three photos from 1999
668:
13:
1296:Steel bridges in the United States
1213:National Historic Preservation Act
653:
112:bridges that were designed by the
14:
1307:
759:accompanying two photos from 1999
710:accompanying two photos from 1999
649:accompanying two photos from 1999
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740:bridgehunter pic and description
574:bridge that was built in 1933.
439:Highway Bridges in Colorado MPS
214:Highway Bridges in Colorado MPS
114:Colorado Department of Highways
1166:Federated States of Micronesia
812:Architectural style categories
733:
484:Midwest Steel & Iron Works
471:on US 34 at milepost 85.15 in
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1:
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539:Big Thompson River Bridge III
469:Big Thompson River Bridge III
368:Big Thompson River Bridge III
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82:Big Thompson River Bridge I,
16:Four historic bridges on the
609:Big Thompson River Bridge IV
565:Big Thompson River Bridge IV
550:
403:less than one acre (III, IV)
370:Big Thompson River Bridge IV
357:United States historic place
333:Big Thompson River Bridge II
297:
152:Formerly listed on the
145:Big Thompson River Bridge II
132:United States historic place
7:
496:camelback pony truss bridge
413:; 91 years ago
286:Big Thompson River Bridge I
188:; 87 years ago
143:Big Thompson River Bridge I
127:
71:GPX (secondary coordinates)
10:
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1218:Historic Preservation Fund
1197:American Legation, Morocco
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1159:Lists by associated state
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444:NRHP reference
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219:NRHP reference
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66:GPX (primary coordinates)
41:Map all coordinates using
1140:Northern Mariana Islands
755:. National Park Service.
725:. National Park Service.
706:. National Park Service.
645:. National Park Service.
426:Architectural style
201:Architectural style
49:Download coordinates as:
22:Larimer County, Colorado
1135:Minor Outlying Islands
1118:Lists by insular areas
832:Keeper of the Register
598:40.41861°N 105.17972°W
560:
528:40.41500°N 105.19500°W
354:
322:40.38944°N 105.46361°W
275:40.38028°N 105.47194°W
837:National Park Service
817:Contributing property
689:National Park Service
558:
352:
61:GPX (all coordinates)
1192:District of Columbia
603:40.41861; -105.17972
533:40.41500; -105.19500
429:Camelback pony truss
327:40.38944; -105.46361
280:40.38028; -105.47194
204:Camelback pony truss
169:Estes Park, Colorado
593: /
523: /
317: /
270: /
86:at milepost 65.53,
561:
473:Loveland, Colorado
394:Loveland, Colorado
355:
178:less than one acre
35:The four bridges:
18:Big Thompson River
1268:
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822:Historic district
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249:November 29, 2010
246:Removed from NRHP
233:Significant dates
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105:All four were
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1004:New Hampshire
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44:OpenStreetMap
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27:
26:flood of 1976
24:survived its
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1064:South Dakota
1054:Rhode Island
1049:Pennsylvania
1029:North Dakota
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165:Nearest city
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97:Loveland, CO
48:
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40:
34:
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1185:Other areas
1145:Puerto Rico
979:Mississippi
894:Connecticut
601: /
588:105°10′47″W
531: /
518:105°11′42″W
325: /
312:105°27′49″W
278: /
265:105°28′19″W
1275:Categories
1094:Washington
1014:New Mexico
1009:New Jersey
884:California
621:References
607: (
572:pony truss
537: (
515:40°24′54″N
489:guardrails
480:pony truss
453:, 02001140
345:Bridge III
331: (
309:40°23′22″N
284: (
262:40°22′49″N
228:, 02001141
110:pony truss
1104:Wisconsin
1069:Tennessee
974:Minnesota
949:Louisiana
585:40°25′7″N
569:camelback
551:Bridge IV
477:Camelback
298:Bridge II
107:camelback
1260:Category
1089:Virginia
1039:Oklahoma
1019:New York
994:Nebraska
984:Missouri
969:Michigan
959:Maryland
944:Kentucky
924:Illinois
899:Delaware
889:Colorado
879:Arkansas
451:02001139
389:Location
226:02001144
128:Bridge I
1206:Related
1109:Wyoming
1084:Vermont
989:Montana
929:Indiana
909:Georgia
904:Florida
874:Arizona
864:Alabama
416: (
191: (
1044:Oregon
999:Nevada
939:Kansas
914:Hawaii
869:Alaska
805:Topics
1176:Palau
1074:Texas
954:Maine
919:Idaho
408:Built
183:Built
84:US 34
1130:Guam
1079:Utah
1034:Ohio
934:Iowa
757:and
727:and
708:and
647:and
563:The
467:The
418:1933
411:1933
400:Area
193:1937
186:1937
175:Area
446:No.
435:MPS
221:No.
210:MPS
56:KML
20:in
1277::
687:.
681:.
670:^
629:^
860::
790:e
783:t
776:v
664:.
611:)
541:)
420:)
335:)
288:)
195:)
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
