US Bridges

S.H. 99 over N. Canadian River

Fair

Seminole County, Oklahoma · Pott-Seminole C/L · Structure no. 226830000000000

Built
1990
35 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
812 ft
8 main spans
Daily traffic
2,850
2022 count
Owner
State
State Highway Agency

About this bridge

S.H. 99 over N. Canadian River is a prestressed concrete stringer/multi-beam or girder carrying S.H. 99 over N. Canadian River in Seminole County, Oklahoma. It was built in 1990, so it is 35 years old, younger 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 2,850 vehicles a day, roughly 25% of them trucks, projected to reach 4,560 by 2042. The structure is 812 ft (247.5 m) long and 42 ft wide.

Location

Open in Google Maps
CarriesS.H. 99
CrossesN. Canadian River
LocationPott-Seminole C/L
RouteState Highway 99
CountySeminole County
StateOklahoma
Coordinates35.39895, -96.67053
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating103.1 US tons
Inventory rating46.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans8
Design loadHS 20
Structure length812 ft (247.5 m)
Longest span110 ft (33.5 m)
Deck width42 ft (12.8 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,850 (2022)
Projected traffic4,560 by 2042
Trucks25%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$8 million
NavigationNo navigation control on waterway

Frequently asked questions

When was S.H. 99 over N. Canadian River built?

It was built in 1990, making it 35 years old in 2025.

What condition is S.H. 99 over N. Canadian River 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 April 2024.

How much traffic does S.H. 99 over N. Canadian River carry?

About 2,850 vehicles per day (2022 count), of which roughly 25% are trucks.

How long is S.H. 99 over N. Canadian River?

The structure is 812 ft (247.5 m) long with a longest span of 110 ft (33.5 m) and a deck 42 ft wide.

Who owns S.H. 99 over N. Canadian River?

It is owned by the State Highway Agency.