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S 297 over Deadman`s Basin Canal

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

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

S 297 over Deadman`s Basin Canal in Wheatland County, Montana, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the superstructure, rated 5 (fair condition) on the 0-9 scale.
It was built in 1959, making it 66 years old at the 2025 inventory.
It carries about 79 vehicles a day (traffic count year 2023).
Its listed owner is the state highway agency.
It is one of 14 of the 27 inventoried bridges in Wheatland County rated fair (51.9%); 4 (14.8%) 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	Timber stringer or multi-beam girder
Length	about 58 ft
Location	1M N Shawmut
NBI structure number	S00297000+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 191 over RR	2009	2,316	Good
Third St NE over Abandoned Rr-antelope CR	1939	2,063	Poor
US 191 over Musselshell River	1969	805	Good
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