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Silver Bridge

Photo 

Silver Bridge

Photo from Canyon Highway District 4

License: Released into public domain

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View this photo at canyonhd4.org

BH Photo #446624

Map 

Facts 

Overview
Camelback 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.
5-slope Camelback format upper chord.
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
Average daily traffic (as of 2015)
800
Inventory numbers
ID 26725 (Idaho bridge number)
BH 14854 (Bridgehunter.com ID)
Inspection report (as of September 2017)
Overall condition: Poor
Superstructure condition rating: Poor (4 out of 9)
Substructure condition rating: Poor (4 out of 9)
Deck condition rating: Poor (4 out of 9)
Sufficiency rating: 45.9 (out of 100)
View more at BridgeReports.com

Update Log 

  • April 15, 2019: New photo from Geoff Hubbs
  • 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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