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S.H. 99A over Sand Creek

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

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

S.H. 99A over Sand Creek in Seminole 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 2019, making it 6 years old at the 2025 inventory.
It carries about 520 vehicles a day (traffic count year 2022).
Its listed owner is the state highway agency.
It is one of 108 of the 298 inventoried bridges in Seminole County rated good (36.2%); 36 (12.1%) 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 155 ft
Location	9.98 Mi. E Jct S.H. 99
NBI structure number	314700000000000
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	1963	15,100	Fair
I-40 over Creek	1963	15,100	Fair
I-40 over Creek	1964	14,800	Good
S.H. 99 over Magnolia Creek	1965	14,400	Good
Old U.S. 270 over Magnolia Creek	2020	10,400	Good
S.H. 9 over Carter Creek	2011	10,000	Fair