Home › Oklahoma › Johnston County › S.H. 99 over Washita River

S.H. 99 over Washita River

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

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

S.H. 99 over Washita River in Johnston 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 8 (very good condition) on the 0-9 scale.
It was built in 2016, making it 9 years old at the 2025 inventory.
It carries about 2,000 vehicles a day (traffic count year 2022).
Its listed owner is the state highway agency.
It is one of 54 of the 154 inventoried bridges in Johnston County rated good (35.1%); 6 (3.9%) 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 steel stringer or multi-beam girder
Length	about 815 ft
Location	1.2 Mi. S Jct S.H. 22
NBI structure number	308690000000000
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
S.H. 22 over Pennington Creek	1954	7,000	Fair
S.H. 22 over Sand Creek	1964	4,100	Good
S.H. 22 over Rock Creek	1964	3,700	Fair
S.H. 22 over Little Sandy Creek	1975	3,700	Fair
S.H. 22 over Big Sandy Creek	1975	3,700	Fair
S.H. 199 over Camp Creek	1959	3,500	Fair