US Bridges

S.H. 99A over Snake Creek

Fair

Seminole County, Oklahoma · 4.8 MI E JCT SH 99 · Structure no. 128090000000000

Built
1952
73 years old, rebuilt 2019
Condition
Fair
inspected February 2024
Type
Slab
Concrete
Length
100 ft
4 main spans
Daily traffic
960
2022 count
Owner
State
State Highway Agency

About this bridge

S.H. 99A over Snake Creek is a concrete slab carrying S.H. 99A over Snake Creek in Seminole County, Oklahoma. It was built in 1952 and reconstructed in 2019, so it is 73 years old, older than the Oklahoma average of 47.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 960 vehicles a day, roughly 15% of them trucks, projected to reach 1,536 by 2042. The structure is 100 ft (30.5 m) long and 31 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

Location

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CarriesS.H. 99A
CrossesSnake Creek
Location4.8 MI E JCT SH 99
RouteState Highway 99A
CountySeminole County
StateOklahoma
Coordinates35.34802, -96.58601
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46 US tons
Inventory rating27 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length100 ft (30.5 m)
Longest span25 ft (7.6 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic960 (2022)
Projected traffic1,536 by 2042
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.5 million
NavigationNo navigation control on waterway

Frequently asked questions

When was S.H. 99A over Snake Creek built?

It was built in 1952, making it 73 years old in 2025. It was reconstructed in 2019.

What condition is S.H. 99A over Snake Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in February 2024.

How much traffic does S.H. 99A over Snake Creek carry?

About 960 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is S.H. 99A over Snake Creek?

The structure is 100 ft (30.5 m) long with a longest span of 25 ft (7.6 m) and a deck 31 ft wide.

Who owns S.H. 99A over Snake Creek?

It is owned by the State Highway Agency.