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I-90 Wbl over Machinery Pass

Crook 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 Machinery Pass in Crook 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 1969, making it 56 years old at the 2025 inventory.
It carries about 3,214 vehicles a day (traffic count year 2024).
Its listed owner is the state highway agency.
It is one of 120 of the 176 inventoried bridges in Crook County rated fair (68.2%); 4 (2.3%) 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


Structure	Continuous concrete tee beam
Length	about 102 ft
Location	Gillette - Moorcroft
NBI structure number	BGM
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
US 14 over S Fork Sundance Creek	1954	3,482	Fair
I-90 Wbl over Well Creek	1969	3,214	Fair
I-90 Ebl over Wyo 585	1972	2,981	Good
I-90 Ebl over Machinery Pass	1972	2,981	Fair
I-90 Ebl over I-90 Bus. / US 14	1972	2,981	Good
I-90 Ebl over Machinery Pass	1976	2,953	Good