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Nine Mile Slide Bridge

Photo 

Ninemile Slide Bridge

View from the south

Photo taken by David Jones in April 2017

Enlarge

BH Photo #386053

Map 

Facts 

Overview
Timber stringer bridge over Nine Mile Slide on I-90 Frontage Road
Location
Missoula County, Montana
Status
Open to traffic
History
Built 1947
Design
Timber stringer
Dimensions
Length of largest span: 26.9 ft.
Total length: 379.9 ft.
Deck width: 27.9 ft.
Approximate latitude, longitude
+47.02613, -114.38220   (decimal degrees)
47°01'34" N, 114°22'56" W   (degrees°minutes'seconds")
Approximate UTM coordinates
11/698918/5211393 (zone/easting/northing)
Inventory number
BH 74598 (Bridgehunter.com ID)
Inspection (as of 05/2015)
Deck condition rating: Satisfactory (6 out of 9)
Superstructure condition rating: Fair (5 out of 9)
Substructure condition rating: Fair (5 out of 9)
Sufficiency rating: 85.1 (out of 100)
Average daily traffic (as of 2002)
100

Categories 

Beam (11,970)
Built 1947 (252)
Built during 1940s (3,571)
Missoula County, Montana (46)
Montana (751)
Open (36,583)
Owned by state (13,695)
Span length 25-50 feet (13,587)
Timber stringer (3,342)
Total length 250-500 feet (4,604)

Update Log 

  • April 11, 2017: New photo from David Jones
  • December 3, 2016: Added by James Baughn

Sources 

  • David Jones - david2jpix [at] yahoo [dot] com