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66TH St N. over U.S. 75 Under

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

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

66TH St N. over U.S. 75 Under in Tulsa County, Oklahoma, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
It was built in 1989, making it 36 years old at the 2025 inventory.
It carries about 500 vehicles a day (traffic count year 2022).
Its listed owner is the state highway agency.
It is one of 530 of the 1,140 inventoried bridges in Tulsa County rated good (46.5%); 64 (5.6%) 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	Continuous prestressed concrete multiple box beam
Length	about 299 ft
Location	7.3 Mi N of I-244
NBI structure number	224040000000000
Condition class	Good

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