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Wyo 59 over North Platte River

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

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

Wyo 59 over North Platte River 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 1988, making it 37 years old at the 2025 inventory.
It carries about 6,320 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 steel stringer or multi-beam girder
Length	about 479 ft
Location	Douglas Bypass
NBI structure number	FDB
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 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
I-25 Sbl over CR 18 (Mormon Canyon Rd)	1967	4,838	Good