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I-90 Wbl over Sh CR 121 (Gulch Road)

Sheridan County, Wyoming · rated Fair in the 2025 National Bridge Inventory

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

I-90 Wbl over Sh CR 121 (Gulch Road) in Sheridan County, Wyoming, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
It was built in 1961, making it 64 years old at the 2025 inventory.
It carries about 5,248 vehicles a day (traffic count year 2024).
Its listed owner is the state highway agency.
It is one of 124 of the 170 inventoried bridges in Sheridan County rated fair (72.9%); 9 (5.3%) are rated poor.
A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.

Component ratings

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

Bridge	Built	Vehicles/day	Condition
I-90/US 14/87 Bus over Little Goose Creek	1980	19,102	Good
I-90/US 14/87 Bus over Little Goose Creek	1954	11,489	Good
5th Street over Big Goose Creek	1968	9,363	Poor
Wyo 334 over Little Goose Creek	1993	7,061	Fair
I-90/US 14/87 Bus over I-90	2017	6,639	Good
I-90/US 14/87 Bus over Big Goose Creek	1987	6,539	Good