Milk River CR 507 Bridge
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
- Lost through truss bridge over Milk River on CR 507
- Valley County, Montana
- Built 1911; replaced 2002
- - Illinois Steel Bridge Co. of Jacksonville, Illinois
- Parker through truss
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:
- Average daily traffic (as of 2002)
- Inventory number
- BH 23199 (Bridgehunter.com ID)
- Inspection report (as of May 2017)
- Overall condition: Fair
Superstructure condition rating: Good (7 out of 9)
Substructure condition rating: Satisfactory (6 out of 9)
Deck condition rating: Good (7 out of 9)
Sufficiency rating: 99.9 (out of 100)
View more at BridgeReports.com
- January 12, 2015: HAER photos posted by Dave King
- HAER MT-106 - Milk River Bridge, Spanning Milk River approximately one mile north of Tampico on Tampico North Road, Tampico, Valley County, MT