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U.S. 81 over Four Mile Creek

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

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

U.S. 81 over Four Mile Creek in Canadian 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 1997, making it 28 years old at the 2025 inventory.
It carries about 8,500 vehicles a day (traffic count year 2022).
Its listed owner is the state highway agency.
It is one of 244 of the 495 inventoried bridges in Canadian County rated good (49.3%); 18 (3.6%) 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	Prestressed concrete stringer or multi-beam girder
Length	about 101 ft
Location	0.7 Mi. N. Jct. SH66
NBI structure number	249940000000000
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
I-40 over Creek	1965	63,000	Good
I-40 over Creek	1966	40,700	Good
I-40 over Creek	1966	40,700	Good
I-40 WB over Reno Ave. Under	1966	31,500	Good
Kilpatrick Tp WB over County Line Rd Under	2019	30,400	Good
Kilpatrick Tp EB over County Line Rd Under	2019	30,400	Good