Bridgehunter.com | Big Thompson No. 3 Bridge

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Overview

Photo provided by Kirsten Armbruster of DMJM Harris

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.
Approximate latitude, longitude: +40.41873, -105.18029 (decimal degrees)
40°25'07" N, 105°10'49" W (degrees°minutes'seconds")
Approximate UTM coordinates: 13/484705/4474248 (zone/easting/northing)
USGS topographic map: Masonville
Inventory numbers: CDOT C-16-AA (Colorado Dept. of Transportation structure number)
CDOT C-16-Z (Colorado Dept. of Transportation structure number)
BH 11928 (Bridgehunter.com ID)
Inspection (as of 08/1990): Deck condition rating: Satisfactory (6 out of 9)
Superstructure condition rating: Satisfactory (6 out of 9)
Substructure condition rating: Satisfactory (6 out of 9)
Appraisal: Functionally obsolete
Sufficiency rating: 58.0 (out of 100)
Average daily traffic (as of 1988): 7,700