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Black Bridge

Photos 

Overview

http://www.bikewalkmissoula.org/archives/news/200811News.html

View this photo at bikewalkmissoula.org

BH Photo #192481

Map 

Street View 

Description 

The bridge is associated with the early 20th century development of Montana's highway system. The bridge provided an important vehicular connection across the Blackfoot River on a state highway in western Montana. The bridge was a component of the Yellowstone Trail, an early interstate highway that later became known as US Highway 10. The bridge is an excellent example of riveted Parker through truss, the first built under a standardized design developed by the Montana Highway Department in 1915. Bypassed by the Montana Department of Transportation in 1950, the bridge has not been modified or altered in any way and is a good representative example of a riveted Parker through truss.

-- Historic American Engineering Record

Facts 

Overview
Reconstructed through truss bridge over Clark Fork River on a pedestrian trail (old alignment of US 12)
Location
Milltown, Missoula County, Montana
Status
Open to pedestrians
History
Built 1921 as a two-span through truss; reconstructed as a one-span truss bridge in 2008 by lengthening one of the spans and reusing parts from the second span
Builder
- Security Bridge Co. of Billings, Montana
Design
Original configuration: Two riveted, 9-panel Parker through trusses, each 166.5 ft. long and 19.5 ft wide
Reconstructed configuration: One 12-panel Parker through truss, 222 ft. long and 16 ft. wide
Dimensions
Length of largest span: 222.0 ft.
Deck width: 16.0 ft.
Approximate latitude, longitude
+46.87316, -113.88278   (decimal degrees)
46°52'23" N, 113°52'58" W   (degrees°minutes'seconds")
Approximate UTM coordinates
12/280323/5195104 (zone/easting/northing)
Quadrangle map:
Southeast Missoula
Inventory number
BH 47740 (Bridgehunter.com ID)

Update Log 

  • March 25, 2012: New Street View added by Craig Philpott
  • January 20, 2012: HAER photos posted by J.P.
  • January 17, 2011: Added by James McCray

Sources 

  • James McCray - jamesinslocomb [at] yahoo [dot] com
  • HAER MT-134 - Milltown Bridge, Spanning the Blackfoot River on Anaconda Street, Milltown, Missoula County, MT
  • Craig Philpott - craigphilpott63 [at] gmail [dot] com