US Bridges

S.H. 74 over Cimarron River

Fair

Logan County, Oklahoma · 1.1 MI N JCT SH 33 · Structure no. 139330000000000

Built
1957
68 years old, rebuilt 1987
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
803 ft
8 main spans
Daily traffic
5,300
2022 count
Owner
State
State Highway Agency

About this bridge

S.H. 74 over Cimarron River is a steel continuous stringer/multi-beam or girder carrying S.H. 74 over Cimarron River in Logan County, Oklahoma. It was built in 1957 and reconstructed in 1987, so it is 68 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 5,300 vehicles a day, roughly 15% of them trucks, projected to reach 8,480 by 2042. The structure is 803 ft (244.8 m) long and 42 ft wide. If it were closed, the detour would be 37.9 mi (61 km).

Location

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CarriesS.H. 74
CrossesCimarron River
Location1.1 MI N JCT SH 33
RouteState Highway 74
CountyLogan County
StateOklahoma
Coordinates35.88582, -97.59001
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58 US tons
Inventory rating34 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans8
Design loadH 20
Structure length803 ft (244.8 m)
Longest span100 ft (30.5 m)
Deck width42 ft (12.8 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,300 (2022)
Projected traffic8,480 by 2042
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed37.9 mi (61 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$7.9 million
NavigationNo navigation control on waterway

Frequently asked questions

When was S.H. 74 over Cimarron River built?

It was built in 1957, making it 68 years old in 2025. It was reconstructed in 1987.

What condition is S.H. 74 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 August 2024.

How much traffic does S.H. 74 over Cimarron River carry?

About 5,300 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is S.H. 74 over Cimarron River?

The structure is 803 ft (244.8 m) long with a longest span of 100 ft (30.5 m) and a deck 42 ft wide.

Who owns S.H. 74 over Cimarron River?

It is owned by the State Highway Agency.