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Irr N2780 over Cooper Creek

Kingfisher County, Oklahoma · rated Good in the 2025 National Bridge Inventory

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

Irr N2780 over Cooper Creek in Kingfisher County, Oklahoma, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the superstructure, rated 7 (good condition) on the 0-9 scale.
It was built in 2016, making it 9 years old at the 2025 inventory.
It carries about 50 vehicles a day (traffic count year 2022).
Its listed owner is the county highway agency.
It is one of 69 of the 297 inventoried bridges in Kingfisher County rated good (23.2%); 21 (7.1%) 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	Steel stringer or multi-beam girder
Length	about 77 ft
Location	4E 1S of Loyal
NBI structure number	316870000000000
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
U.S. 81 over Kingfisher Creek	2019	7,800	Good
U.S. 81 over Creek	1966	6,800	Fair
U.S. 81 over Creek	1966	6,800	Good
U.S. 81 over Little Turkey Creek	1957	5,800	Fair
U.S. 81 over Creek	1990	5,000	Good
S.H. 3 & S.H. 33 over Creek	1933	4,700	Good