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Morgan Crk Rd over Morgan Creek;ne.challis

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

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

Morgan Crk Rd over Morgan Creek;ne.challis in Custer 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 1977, making it 48 years old at the 2025 inventory.
It carries about 90 vehicles a day (traffic count year 2023).
Its listed owner is the county highway agency.
It is one of 40 of the 126 inventoried bridges in Custer County rated good (31.7%); 14 (11.1%) 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

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

Bridge	Built	Vehicles/day	Condition
US 93 over Garden Creek	1941	2,300	Fair
SH 21 over Crooked Creek	1968	2,200	Fair
US 93 over Big Lost River	1987	1,500	Fair
US 93 over Challis Creek	1991	1,400	Good
US 93 over Salmon River;challis Br.	1995	1,400	Good
Capitol Avenue over Swauger Slough	1940	1,220	Fair