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I 90B Loop over S.fk.coeur Dalene River

Shoshone County, Idaho · rated Good in the 2025 National Bridge Inventory

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

I 90B Loop over S.fk.coeur Dalene River in Shoshone County, Idaho, 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 2014, making it 11 years old at the 2025 inventory.
It carries about 1,000 vehicles a day (traffic count year 2023).
Its listed owner is the state highway agency.
It is one of 61 of the 261 inventoried bridges in Shoshone County rated good (23.4%); 26 (10.0%) 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 multiple box beam
Length	about 48 ft
Location	In Mullan
NBI structure number	000000000017376
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
I 90 over Stc 5766;SILVERTON Ic	1978	11,000	Fair
I 90 EB & WB over S.fk.cda R;fr.rd.	1978	11,000	Fair
I 90 over S.fk.coeur Dalene River	1987	11,000	Fair
I 90 Ebl & Wbl over Crossroad Bd;w.wallace I	1987	11,000	Fair
I 90 over I 90B;CANYON CR	1991	11,000	Fair
I 90 Spur over Canyon Creek	1940	10,500	Fair