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Big Blackfoot River Bridge

Photos 

Big Blackfoot River Bridge

View from southwest

Photo taken by David Jones in June 2016

Enlarge

BH Photo #356689

Map 

Facts 

Overview
Pony truss bridge over Big Blackfoot River on CR 111
Location
Powell County, Montana
Status
Open to traffic
History
Built 1914
Design
Warren pony truss
Dimensions
Length of largest span: 89.9 ft.
Total length: 92.9 ft.
Deck width: 15.7 ft.
Vertical clearance above deck: 10.7 ft.
Approximate latitude, longitude
+46.91917, -113.01509   (decimal degrees)
46°55'09" N, 113°00'54" W   (degrees°minutes'seconds")
Approximate UTM coordinates
12/346572/5198152 (zone/easting/northing)
Quadrangle map:
Browns Lake
Inventory number
BH 23136 (Bridgehunter.com ID)
Inspection (as of 11/2015)
Deck condition rating: Good (7 out of 9)
Superstructure condition rating: Fair (5 out of 9)
Substructure condition rating: Satisfactory (6 out of 9)
Sufficiency rating: 70.6 (out of 100)
Average daily traffic (as of 2002)
100

Categories 

Built 1914 (718)
Built during 1910s (8,759)
Montana (751)
One-lane traffic (7,422)
Open (36,587)
Owned by county (18,855)
Pony truss (15,050)
Powell County, Montana (18)
Span length 75-100 feet (5,804)
Total length 75-100 feet (5,941)
Truss (29,444)
Warren pony truss (2,947)
Warren truss (5,791)
Wooden deck (5,862)

Update Log 

  • June 27, 2016: New photos from David Jones
  • March 27, 2012: Updated by Craig Philpott: corrected location

Sources 

  • Craig Philpott - craigphilpott63 [at] gmail [dot] com
  • David Jones - david2jpix [at] yahoo [dot] com