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Cb Cnty Rd 99 over Little Medicine Bow Rvr

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

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

Cb Cnty Rd 99 over Little Medicine Bow Rvr in Carbon 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 1997, making it 28 years old at the 2025 inventory.
It carries about 9 vehicles a day (traffic count year 2024).
Its listed owner is the county highway agency.
It is one of 64 of the 206 inventoried bridges in Carbon County rated good (31.1%); 19 (9.2%) 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	Prestressed concrete tee beam
Length	about 119 ft
Location	27 Mi. N. Medicine Bow
NBI structure number	KTX
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
I-80 Wbl over West Sinclair Intg	2000	7,909	Good
I-80 Wbl over UPRR / Wyo 76	2000	7,909	Good
I-80 EBL and WBL over Sugar Creek	2000	7,637	Fair
I-80 Ebl over West Sinclair Intg	2001	7,637	Good
I-80 Ebl over UPRR / Wyo 76	2001	7,637	Good
I-80 Wbl over Two Mile Draw	1963	7,404	Fair