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Ui Cnty Rd 171 over West Muddy Creek

Uinta County, Wyoming · rated Poor in the 2025 National Bridge Inventory

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

Ui Cnty Rd 171 over West Muddy Creek in Uinta County, Wyoming, is rated in poor condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the superstructure, rated 4 (poor condition) on the 0-9 scale.
It was built in 1975, making it 50 years old at the 2025 inventory.
It carries about 271 vehicles a day (traffic count year 2024).
Its listed owner is the county highway agency.
It is one of 16 of the 132 inventoried bridges in Uinta County rated poor (12.1%); 16 (12.1%) 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

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

Bridge	Built	Vehicles/day	Condition
I-80 Wbl over Yellow Creek Road	1967	8,996	Poor
I-80 Wbl over Wyo 150	1986	8,996	Fair
I-80 Ebl over Harrison Drive	1967	8,693	Fair
I-80 Ebl over UPRR / Bear River	1967	8,487	Fair
I-80 Ebl over Bear River Drive	1966	8,487	Fair
I-80 Ebl over Yellow Creek Road	1967	8,443	Fair