US Bridges

U.S. 81 over Cimarron River

Fair

Kingfisher County, Oklahoma · 6.9 MI N JCT SH 33 · Structure no. 158670000000000

Built
1963
62 years old, rebuilt 2012
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
1,015 ft
8 main spans
Daily traffic
2,500
2022 count
Owner
State
State Highway Agency

About this bridge

U.S. 81 over Cimarron River is a steel continuous stringer/multi-beam or girder carrying U.S. 81 over Cimarron River in Kingfisher County, Oklahoma. It was built in 1963 and reconstructed in 2012, so it is 62 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 5 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 2,500 vehicles a day, roughly 25% of them trucks, projected to reach 4,000 by 2042. The structure is 1,015 ft (309.4 m) long and 33 ft wide.

Location

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CarriesU.S. 81
CrossesCimarron River
Location6.9 MI N JCT SH 33
RouteU.S. Route 81
CountyKingfisher County
StateOklahoma
Coordinates35.95111, -97.91449
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating42 US tons
Inventory rating25 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans8 (+3 approach)
Design loadHS 20
Structure length1,015 ft (309.4 m)
Longest span100 ft (30.5 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,500 (2022)
Projected traffic4,000 by 2042
Trucks25%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkSTRAHNET connector

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$5.9 million
NavigationNo navigation control on waterway

Frequently asked questions

When was U.S. 81 over Cimarron River built?

It was built in 1963, making it 62 years old in 2025. It was reconstructed in 2012.

What condition is U.S. 81 over Cimarron 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 July 2024.

How much traffic does U.S. 81 over Cimarron River carry?

About 2,500 vehicles per day (2022 count), of which roughly 25% are trucks.

How long is U.S. 81 over Cimarron River?

The structure is 1,015 ft (309.4 m) long with a longest span of 100 ft (30.5 m) and a deck 33 ft wide.

Who owns U.S. 81 over Cimarron River?

It is owned by the State Highway Agency.