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S Archer Rd over Big Muddy Creek 016

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

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

S Archer Rd over Big Muddy Creek 016 in Sheridan 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 2004, making it 21 years old at the 2025 inventory.
It carries about 17 vehicles a day (traffic count year 2023).
Its listed owner is the county highway agency.
It is one of 11 of the 66 inventoried bridges in Sheridan County rated good (16.7%); 3 (4.5%) 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 139 ft
Location	7M SE Redstone
NBI structure number	L46425000+05001
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
S 5 over Marron Creek	1983	1,559	Fair
S 16 over Ator Creek	1984	1,559	Fair
S 5 over Antelope Creek	1986	1,120	Good
S 16 over Medicine Lake	1975	891	Fair
S 5 over Plentywood Creek	2001	589	Good
S 5 over Mccoy Creek	2001	589	Good