Home › Montana › Stillwater County › S 78 over Beaver Creek

S 78 over Beaver Creek

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

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

S 78 over Beaver Creek in Stillwater 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 2010, making it 15 years old at the 2025 inventory.
It carries about 2,376 vehicles a day (traffic count year 2023).
Its listed owner is the state highway agency.
It is one of 28 of the 92 inventoried bridges in Stillwater County rated good (30.4%); 1 (1.1%) 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 89 ft
Location	2M NE Absarokee
NBI structure number	P00078034+09111
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
I 90 over Cove Irrigation Ditch	1970	12,321	Good
I 90 over Int Exit 396	1963	10,845	Fair
I 90 over Int Park City	1967	7,580	Fair
I 90 over Int Park City	1967	7,580	Fair
I 90 over Sep Pope Road	1967	7,580	Fair
I 90 over Sep Pope Road	1967	7,580	Fair