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Road 317 over Drag Creek

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

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

Road 317 over Drag Creek in Petroleum 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 1963, making it 62 years old at the 2025 inventory.
It carries about 2 vehicles a day (traffic count year 2024).
It is one of 4 of the 26 inventoried bridges in Petroleum County rated poor (15.4%); 4 (15.4%) 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	Timber stringer or multi-beam girder
Length	about 23 ft
Location	Sect 11 T18N R29E
NBI structure number	000061520-00036
Condition class	Poor

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

Bridge	Built	Vehicles/day	Condition
S 200 over Box Elder Creek	1953	539	Fair
S 244 over Mcdonald Creek	1941	245	Fair
S 244 over Pike Creek	1939	233	Fair
S 244 over Drainage	1935	233	Fair
S 244 over Yellow Water Cr-elk CR	1948	233	Poor
S 244 over Drainage	1940	208	Fair