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I-25 Sbl over Machinery Pass

Converse County, Wyoming · rated Good in the 2025 National Bridge Inventory

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

I-25 Sbl over Machinery Pass in Converse County, Wyoming, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
It was built in 1972, making it 53 years old at the 2025 inventory.
It carries about 3,379 vehicles a day (traffic count year 2024).
Its listed owner is the state highway agency.
It is one of 21 of the 136 inventoried bridges in Converse County rated good (15.4%); 19 (14.0%) are rated poor.
A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.

Component ratings


Structure	Continuous concrete tee beam
Length	about 89 ft
Location	Glendo - Douglas
NBI structure number	CZR
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
I25/US20-26-87 Bus over North Platte River	2009	8,403	Good
I25/US20-26-87 Bus over I-25	1966	7,719	Fair
Wyo 59 over North Platte River	1988	6,320	Good
Wyo 59 over BNSF Railway	1988	6,320	Fair
W Richards Street over North Platte River	1984	5,816	Poor
I-25 Sbl over Wyo 90	1967	4,838	Fair