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Wyo 487 over Sand Creek

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

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

Wyo 487 over Sand Creek in Natrona 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 5 (fair condition) on the 0-9 scale.
It was built in 1981, making it 44 years old at the 2025 inventory.
It carries about 935 vehicles a day (traffic count year 2024).
Its listed owner is the state highway agency.
It is one of 85 of the 135 inventoried bridges in Natrona County rated fair (63.0%); 5 (3.7%) 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	Prestressed concrete stringer or multi-beam girder
Length	about 85 ft
Location	Medicine Bow - Jt WYO 220
NBI structure number	DLP
Condition class	Fair

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