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US 191 over Musselshell River

Wheatland County, Montana · rated Good in the 2025 National Bridge Inventory

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

US 191 over Musselshell River in Wheatland County, Montana, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
It was built in 1969, making it 56 years old at the 2025 inventory.
It carries about 805 vehicles a day (traffic count year 2023).
Its listed owner is the state highway agency.
It is one of 9 of the 27 inventoried bridges in Wheatland County rated good (33.3%); 4 (14.8%) are rated poor.
A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.

Component ratings


Structure	Prestressed concrete stringer or multi-beam girder
Length	about 171 ft
Location	1M S Harlowton
NBI structure number	P00045043+04301
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
US 191 over RR	2009	2,316	Good
Third St NE over Abandoned Rr-antelope CR	1939	2,063	Poor
US 191 over Abandoned RR	1969	805	Good
US 191 over Drainage	1942	706	Fair
US 191 over S Fork American Fork	1941	706	Poor
US 191 over American Fork	1942	706	Fair