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S.H. 8 over Salt Fork Arkansas River

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

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

S.H. 8 over Salt Fork Arkansas River in Alfalfa 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 5 (fair condition) on the 0-9 scale.
It was built in 1957 and reconstructed in 2010, making it 68 years old at the 2025 inventory.
It carries about 1,800 vehicles a day (traffic count year 2022).
Its listed owner is the state highway agency.
It is one of 258 of the 387 inventoried bridges in Alfalfa County rated fair (66.7%); 23 (5.9%) 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	Continuous steel stringer or multi-beam girder
Length	about 902 ft
Location	1.6 MI.N.JCT.US64
NBI structure number	139350000000000
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. 69 over Buck Creek	2021	15,919	Good
S.H. 11 over Unnamed Creek	2020	2,800	Good
U.S. 64 over Creek	1927	2,700	Fair
U.S. 64 over Creek	1927	2,700	Fair
U.S. 64 over West Clay Creek	1972	2,700	Fair
U.S. 64 over Lambert Creek	1975	2,700	Good