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Redrock Rd over Red Rock Coulee 009

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

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

Redrock Rd over Red Rock Coulee 009 in Blaine County, Montana, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the substructure, rated 5 (fair condition) on the 0-9 scale.
It was built in 1933, 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 57 of the 102 inventoried bridges in Blaine County rated fair (55.9%); 10 (9.8%) are rated poor.
A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.

Component ratings


Structure	Continuous steel stringer or multi-beam girder
Length	about 38 ft
Location	4M NW Chinook
NBI structure number	L03042002+09001
Condition class	Fair

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