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County Road over Mammoth Creek

Garfield County, Utah · rated Poor in the 2025 National Bridge Inventory

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

County Road over Mammoth Creek in Garfield County, Utah, is rated in poor condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 3 (serious condition) on the 0-9 scale.
It was built in 1945 and reconstructed in 1994, making it 80 years old at the 2025 inventory.
It carries about 6 vehicles a day (traffic count year 2010).
Its listed owner is the county highway agency.
It is one of 5 of the 93 inventoried bridges in Garfield County rated poor (5.4%); 5 (5.4%) 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 27 ft
Location	9.5 Mi.so.panguitch Lake
NBI structure number	017011A
Condition class	Poor

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

Bridge	Built	Vehicles/day	Condition
SR-12 over Red Canyon Wash	1971	3,099	Fair
SR-12 over Butch Cassidy Wash	1971	3,099	Fair
SR-12 over Sevier River	2003	3,099	Good
US-89 (SR-89) over Panguitch Creek	1978	2,622	Fair
US-89 (SR-89) over Sandy Creek	1931	2,536	Fair
SR-12 over East Fork Sevier River	1961	2,460	Fair