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N3050 over Sullivan Creek

Grant County, Oklahoma · rated Fair in the 2025 National Bridge Inventory

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

N3050 over Sullivan Creek in Grant County, Oklahoma, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
It was built in 1997, making it 28 years old at the 2025 inventory.
It carries about 25 vehicles a day (traffic count year 2022).
Its listed owner is the county highway agency.
It is one of 308 of the 477 inventoried bridges in Grant County rated fair (64.6%); 31 (6.5%) 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

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

Bridge	Built	Vehicles/day	Condition
U.S. 60/U.S. 64&81 over Creek	1967	3,200	Fair
U.S. 60/U.S. 64&81 over Nine Mile Creek	1967	3,200	Fair
U.S. 60/U.S. 64&81 over Wild Horse Creek	1967	3,200	Fair
U.S. 60/U.S. 64&81 over Creek	1969	3,200	Good
U.S. 60 / U.S. 81 over Killpecker Creek	2003	2,300	Good
U.S. 81 over Killpecker Creek	2014	2,000	Good