Rating:
1 vote

Silver Bridge

Photos 

Overview; View To South

Photo taken by Kristi Hager for the Historic American Engineering Record

View photos at Library of Congress

BH Photo #223573

Map 

Street View 

Facts 

Overview
Through truss bridge over Bitterroot River on US 93 in Hamilton
Location
Ravalli County, Montana
Status
replaced by a new bridge
History
Built 1940
Builders
- Bethlehem Steel Co. of Bethlehem, Pennsylvania
- Virginia Bridge Co. of Roanoke, Virginia
- William P. Roscoe Co. of Billings, Montana
Design
Through truss
Dimensions
Length of largest span: 175.9 ft.
Total length: 392.1 ft.
Deck width: 24.0 ft.
Vertical clearance above deck: 15.9 ft.
Also called
US93 Bitterroot River Bridge
Approximate latitude, longitude
+46.27806, -114.16187   (decimal degrees)
46°16'41" N, 114°09'43" W   (degrees°minutes'seconds")
Approximate UTM coordinates
11/718655/5128857 (zone/easting/northing)
Quadrangle map:
Hamilton North
Average daily traffic (as of 2015)
12,210
Inventory number
BH 23151 (Bridgehunter.com ID)
Inspection report (as of October 2016)
Overall condition: Fair
Superstructure condition rating: Good (7 out of 9)
Substructure condition rating: Good (7 out of 9)
Deck condition rating: Fair (5 out of 9)
Sufficiency rating: 82 (out of 100)
View more at BridgeReports.com

Update Log 

  • March 25, 2012: Updated by Craig Philpott: Corrected location
  • January 20, 2012: HAER photos posted by J.P.
  • September 20, 2010: Updated by J.P.: bridge has been replaced.
  • April 20, 2010: New Street View added by J.P.

Sources 

  • J.P. - wildcatjon2000 [at] gmail [dot] com
  • HAER MT-129 - Silver Bridge, Spanning Bitterroot River at U.S. Highway 93, Hamilton, Ravalli County, MT
  • Craig Philpott - craigphilpott63 [at] gmail [dot] com