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I-35 SB over Cimarron River Oflow

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

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

I-35 SB over Cimarron River Oflow in Payne County, Oklahoma, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the superstructure, rated 5 (fair condition) on the 0-9 scale.
It was built in 1989, making it 36 years old at the 2025 inventory.
It carries about 10,150 vehicles a day (traffic count year 2022).
Its listed owner is the state highway agency.
It is one of 251 of the 384 inventoried bridges in Payne County rated fair (65.4%); 40 (10.4%) 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 1,364 ft
Location	0.2 Mi N Logan C/l
NBI structure number	221030000000000
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
E0610 (mc Elroy over West Boomer Creek	1984	17,000	Fair
S.H. 51 over Creek	1960	15,800	Fair
I-35 over Stillwater Creek	1959	15,500	Fair
E0600 over Boomer Lake	1995	15,000	Good
Western Ave. over Stillwater Creek	2004	15,000	Fair
U.S. 177 over Boomer Creek	1982	14,700	Fair