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 

• View #1

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

Categories 

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

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