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S.H. 11 over Abandoned R.R. Under

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

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

S.H. 11 over Abandoned R.R. Under in Kay 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 1970, making it 55 years old at the 2025 inventory.
It carries about 3,600 vehicles a day (traffic count year 2022).
Its listed owner is the state highway agency.
It is one of 268 of the 419 inventoried bridges in Kay County rated fair (64.0%); 22 (5.3%) 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 317 ft
Location	0.7 Mi E Jct US 177
NBI structure number	179430000000000
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
I-35 over Salt Fk Ark Rvr Oflow	1959	17,500	Good
I-35 over Salt Fk Ark Rvr Oflow	1962	17,500	Fair
I-35 over Salt Fk Ark Rvr Oflow	1962	17,500	Fair
I-35 over Creek	1959	15,700	Fair
I-35 over Creek	1960	15,500	Fair
I-35 over Dry Creek	1959	14,300	Fair