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Milk River CR 507 Bridge

Photos 

Long View; View To North-Northeast

Photo taken for the Historic American Engineering Record

View photos at Library of Congress

BH Photo #313351

Map 

Description 

Constructed at the height of the Montana Homestead Boom (1909-1917), the Milk River Bridge facilitated the transportation of agricultural goods to the Great Northern Railway station at Tampico in northeastern Montana. The bridge was part of an infrastructure improvement program to accommodate the new residents of Valley County and was one of several pin-connected Parker through truss bridges constructed by the county across the Milk River between 1910 and 1916. The completion of the bridge caused a boom in the development of Tampico as it expanded to meet the needs of the surrounding agricultural community. The bridge is significant as a pin-connected Parker through truss, a type common to northeastern Montana in the early 20th century.

-- Historic American Engineering Record

Facts 

Overview
Lost through truss bridge over Milk River on CR 507
Location
Valley County, Montana
Status
Replaced
History
Built 1911; replaced 2002
Builder
- Illinois Steel Bridge Co. of Jacksonville, Illinois
Design
Parker through truss
Dimensions
Length of largest span: 200.1 ft.
Total length: 253.0 ft.
Deck width: 15.4 ft.
Approximate latitude, longitude
+48.30787, -106.82262   (decimal degrees)
48°18'28" N, 106°49'21" W   (degrees°minutes'seconds")
Approximate UTM coordinates
13/364854/5352124 (zone/easting/northing)
Quadrangle map:
Tampico
Average daily traffic (as of 2002)
100
Inventory number
BH 23199 (Bridgehunter.com ID)
Inspection report (as of June 2015)
Overall condition: Good
Superstructure condition rating: Good (7 out of 9)
Substructure condition rating: Good (7 out of 9)
Deck condition rating: Good (7 out of 9)
Sufficiency rating: 98.9 (out of 100)
View more at BridgeReports.com

Update Log 

  • January 12, 2015: HAER photos posted by Dave King

Sources 

  • HAER MT-106 - Milk River Bridge, Spanning Milk River approximately one mile north of Tampico on Tampico North Road, Tampico, Valley County, MT