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Na Cnty Rd 110 over South Fork Powder River

Natrona County, Wyoming · rated Poor in the 2025 National Bridge Inventory

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

Na Cnty Rd 110 over South Fork Powder River in Natrona County, Wyoming, is rated in poor condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 4 (poor condition) on the 0-9 scale.
It was built in 1977, making it 48 years old at the 2025 inventory.
It carries about 53 vehicles a day (traffic count year 2024).
Its listed owner is the county highway agency.
It is one of 5 of the 135 inventoried bridges in Natrona County rated poor (3.7%); 5 (3.7%) are rated poor.
A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.

Component ratings


Structure	Prestressed concrete tee beam
Length	about 211 ft
Location	44 Miles N.W. Of Casper
NBI structure number	DDK
Condition class	Poor

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

Bridge	Built	Vehicles/day	Condition
Wyo 220 over Garden Creek	2001	26,351	Fair
Wyo 220 over North Platte River	1969	14,749	Fair
Wyo 220 over BNSF Railway	1969	14,641	Fair
I-25 Sbl over North McKinley Street	1958	12,618	Fair
I-25 Nbl over North McKinley Street	1958	12,577	Fair
I-25 NBL and SBL over Walsh Drive	2022	12,577	Good