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S.H. 51 over Arkansas River

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

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

S.H. 51 over Arkansas River in Tulsa County, Oklahoma, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the substructure, rated 5 (fair condition) on the 0-9 scale.
It was built in 1976, making it 49 years old at the 2025 inventory.
It carries about 15,400 vehicles a day (traffic count year 2022).
Its listed owner is the state highway agency.
It is one of 546 of the 1,140 inventoried bridges in Tulsa County rated fair (47.9%); 64 (5.6%) 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	Prestressed concrete stringer or multi-beam girder
Length	about 2,077 ft
Location	at Ark River
NBI structure number	192790000000000
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
S Mingo Rd over Haikey Creek West Branch	2022	181,800	Good
U.S. 169 over Mingo Creek	1976	123,200	Fair
U.S. 169 over Mingo Creek	1976	123,200	Good
U.S. 169 over S.H. 51 Under	1976	123,200	Fair
U.S. 169 over E 61 St S Under	1988	123,200	Fair
U.S. 169 over Creek	1963	116,300	Good