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Old Darby Road Bridge

Photos 

The Bridge from the southwest side.

Photo taken by Matthew Harris in August 2010

Enlarge

BH Photo #172778

Map 

Street View 

Description 

Old Darby Road was the road between Hamilton and Darby before the construction of Highway 93, in the 1930s. Presumably, the bridge was built sometime between the settling of the area (1870s) and then. It now does not carry significant traffic, since Old Darby Road is a gravel road with a few scattered homes.

Facts 

Overview
Through truss bridge over Bitterroot River on Old Darby Road
Location
Ravalli County, Montana
Status
Open to traffic
History
Built 1917; rehabilitated 2001
Design
Polygonal Warren through truss
Dimensions
Length of largest span: 160.1 ft.
Total length: 164.1 ft.
Deck width: 14.4 ft.
Approximate latitude, longitude
+46.09222, -114.17556   (decimal degrees)
46°05'32" N, 114°10'32" W   (degrees°minutes'seconds")
Approximate UTM coordinates
11/718336/5108172 (zone/easting/northing)
Quadrangle map:
Darby
Elevation
3800 ft. above sea level
Average daily traffic (as of 2003)
100
Inventory number
BH 45896 (Bridgehunter.com ID)
Inspection report (as of August 2015)
Overall condition: Fair
Superstructure condition rating: Satisfactory (6 out of 9)
Substructure condition rating: Good (7 out of 9)
Deck condition rating: Good (7 out of 9)
Sufficiency rating: 76 (out of 100)
View more at BridgeReports.com

Update Log 

  • February 23, 2014: New photo from Jack Schmidt
  • March 25, 2012: New Street View added by Craig Philpott
  • November 23, 2011: Removed duplicate page, merged NBI data
  • August 15, 2010: Added by Matthew Harris

Sources 

  • Matthew Harris - mnharris [at] gmail [dot] com
  • Craig Philpott - craigphilpott63 [at] gmail [dot] com
  • Jack Schmidt - jjturtle [at] earthlink [dot] net