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N1980 over Buffalo Creek

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

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

N1980 over Buffalo Creek in Harper County, Oklahoma, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the substructure, rated 7 (good condition) on the 0-9 scale.
It was built in 1950 and reconstructed in 2008, making it 75 years old at the 2025 inventory.
It carries about 100 vehicles a day (traffic count year 2022).
Its listed owner is the county highway agency.
It is one of 41 of the 128 inventoried bridges in Harper County rated good (32.0%); 2 (1.6%) 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 241 ft
Location	.3W 1.2N of Selman
NBI structure number	124740000000000
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. 183 over Creek	2003	4,900	Good
U.S. 270 over Creek	1932	3,100	Fair
U.S. 270 over Creek	1932	3,100	Good
U.S. 270 over Creek	1932	3,100	Fair
U.S. 270 over Sand Creek	1987	3,100	Fair
U.S. 270 over Creek	1932	3,000	Good