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Redrock Rd over Fort Belknap Canal 008

Blaine County, Montana · rated Poor in the 2025 National Bridge Inventory

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled August 20, 2026

Redrock Rd over Fort Belknap Canal 008 in Blaine County, Montana, is rated in poor condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the substructure, rated 4 (poor condition) on the 0-9 scale.
It was built in 1933 and reconstructed in 2002, making it 92 years old at the 2025 inventory.
It carries about 212 vehicles a day (traffic count year 2023).
Its listed owner is the county highway agency.
It is one of 10 of the 102 inventoried bridges in Blaine County rated poor (9.8%); 10 (9.8%) are rated poor.
A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.

Component ratings


Structure	Steel stringer or multi-beam girder
Length	about 47 ft
Location	3M NW Chinook
NBI structure number	L03042002+03001
Condition class	Poor

Source: FHWA National Bridge Inventory, 2025 data as reported by the Montana department of transportation.

Bridge	Built	Vehicles/day	Condition
US 2 over Main Irrigation Canal	1968	3,311	Good
Irr - US 2 over Milk River	1964	3,311	Poor
US 2 over Red Rock Creek Overflow	1942	2,919	Fair
US 2 over Drainage	1942	2,919	Fair
US 2 over Red Rock West Overflow	2020	2,732	Good
US 2 over Red Rock Coulee	2020	2,732	Good