Home › Idaho › Camas County › Swamp Road over Camas Creek

Swamp Road over Camas Creek

Camas County, Idaho · rated Poor in the 2025 National Bridge Inventory

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

Swamp Road over Camas Creek in Camas County, Idaho, is rated in poor condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the substructure, rated 3 (serious condition) on the 0-9 scale.
It was built in 1965, making it 60 years old at the 2025 inventory.
It carries about 40 vehicles a day (traffic count year 2023).
Its listed owner is the county highway agency.
It is one of 7 of the 62 inventoried bridges in Camas County rated poor (11.3%); 7 (11.3%) are rated poor.
A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.

Component ratings


Structure	Timber stringer or multi-beam girder
Length	about 46 ft
Location	1.8 S. 0.3 E. Hill City
NBI structure number	000000000023860
Condition class	Poor

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

Bridge	Built	Vehicles/day	Condition
US 20 over Willow Creek	2019	2,200	Good
US 20 over No Name Creek	1961	1,900	Fair
US 20 over Hot Creek	1961	1,900	Fair
US 20 over Arnold Creek	1961	1,900	Fair
US 20 over Chimney Cr.;sheep CR.	1961	1,900	Fair
US 20 over Corral Creek	1969	1,900	Fair