Historic Bridges
of the United States
Big Thompson No. 3 Bridge
Larimer County
,
Colorado
Overview
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Photo
Overview
Photo provided by Kirsten Armbruster of DMJM Harris
Facts
Overview
Lost pony truss bridge over Big Thompson River on US 34
Location
Larimer County
,
Colorado
Status
Replaced by modern bridge
History
Built 1933
Design
Riveted, 6-panel Parker pony truss
Dimensions
Length of largest span: 100.0 ft.
Total length: 133.8 ft.
Deck width: 29.8 ft.
Inventory numbers
CDOT C-16-AA
(Colorado Dept. of Transportation structure number)
BH 11928
(Bridgehunter.com ID)
Categories
6-panel truss
(121)
Built 1933
(334)
Built during 1930s
(5,230)
Colorado
(273)
Formerly NR-eligible
(76)
Larimer County, Colorado
(7)
Lost
(854)
Owned by state
(6,645)
Parker truss
(445)
Pony truss
(9,483)
Replaced by new bridge
(699)
Riveted
(374)
Span length 100-125 feet
(2,299)
Total length 125-175 feet
(2,694)
Truss
(16,067)
US 34
(4)
Update Log
June 18, 2005: Posted photo from Kirsten Armbruster
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