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N1840 over Creek

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

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

N1840 over Creek in Harper County, Oklahoma, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the superstructure, rated 6 (satisfactory condition) on the 0-9 scale.
It was built in 2008, making it 17 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 85 of the 128 inventoried bridges in Harper County rated fair (66.4%); 2 (1.6%) 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	Steel stringer or multi-beam girder
Length	about 29 ft
Location	10N; 7W; .1N of Buffalo
NBI structure number	292540000000000
Condition class	Fair

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