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S 327 over Little Muddy Creek

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

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

S 327 over Little Muddy Creek in Roosevelt 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 2020, making it 5 years old at the 2025 inventory.
It carries about 267 vehicles a day (traffic count year 2023).
Its listed owner is the state highway agency.
It is one of 14 of the 57 inventoried bridges in Roosevelt County rated good (24.6%); 7 (12.3%) 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 tee beam
Length	about 123 ft
Location	3M SE Bainville
NBI structure number	000000202006661
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
Irr - US 2 over Mosquito Creek	1986	4,269	Fair
Irr - US 2 over Little Wolf Creek	1988	4,269	Fair
Irr - US 2 over Poplar River	2000	2,296	Fair
S 16 over Sheep Creek	1970	2,129	Fair
Irr - US 2 over Tule Creek	1958	2,054	Fair
Irr - US 2 over Chelsea Creek	1960	2,054	Poor