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N1900 over Creek

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

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

N1900 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 culvert, rated 5 (fair condition) on the 0-9 scale.
It was built in 1949, making it 76 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.
Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
Its condition class and component ratings are unchanged from the 2024 inventory.
Its most recent inspection on record is dated February 2023, on a 24-month routine inspection cycle.
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

Component	Rating (2024)	Rating (2025)	FHWA scale meaning
Culvert	5	5	Fair condition


Structure	Concrete culvert
Length	about 32 ft
Location	.5W 2.4N of Buffalo
NBI structure number	110200000000000
Condition class	Fair
Traffic status (item 41)	Open, no restriction
Last inspection (item 90)	February 2023
Inspection interval (item 91)	24 months
Scour (item 113)	8: foundations stable, scour above the top of the footing

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