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West Plymouth Street Bridge

Map 

Street Views 

Facts 

Overview
Polygonal Warren through truss bridge over Boise River on STC 7787
Location
Caldwell, Canyon County, Idaho
Status
Open to traffic
Future prospects
http://www.canyonhd4.org/highway-30-bridge.php
History
Built 1922
Builders
- American Bridge Co. of New York (Contractor)
- F. H. McConnel of Caldwell, Idaho (Design)
Design
Three span polygonal Warren through truss with riveted connections.
Dimensions
Length of largest span: 128.0 ft.
Total length: 388.1 ft.
Deck width: 19.4 ft.
Vertical clearance above deck: 14.3 ft.
Also called
Boise River Greenway - Plymouth Street Bridge (Future Name)
Approximate latitude, longitude
+43.68886, -116.68745   (decimal degrees)
43°41'20" N, 116°41'15" W   (degrees°minutes'seconds")
Approximate UTM coordinates
11/525189/4837363 (zone/easting/northing)
Quadrangle map:
Caldwell
Inventory numbers
ID 26725 (Idaho bridge number)
BH 14854 (Bridgehunter.com ID)
Inspection (as of 09/2015)
Deck condition rating: Poor (4 out of 9)
Superstructure condition rating: Poor (4 out of 9)
Substructure condition rating: Poor (4 out of 9)
Appraisal: Structurally deficient
Sufficiency rating: 45.7 (out of 100)
Average daily traffic (as of 2014)
1,500

Update Log 

  • May 9, 2016: Updated by Luke: Added builder, noted that the bridge is being replaced, but will remain intact as a pedestrian bridge.
  • July 13, 2010: Updated by Nathan Holth: Updated GPS, Bridge Type, Street View

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