US Bridges

S.H. 74 over Cottonwood Creek Oflow

Fair

Logan County, Oklahoma · 3.2 MI N Okla. C/L · Structure no. 054640000000000

Built
1937
88 years old
Condition
Fair
inspected September 2024
Type
Culvert
Concrete
Length
90 ft
8 main spans
Daily traffic
5,400
2022 count
Owner
State
State Highway Agency

About this bridge

S.H. 74 over Cottonwood Creek Oflow is a concrete culvert carrying S.H. 74 over Cottonwood Creek Oflow in Logan County, Oklahoma. It was built in 1937, so it is 88 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 5,400 vehicles a day, roughly 15% of them trucks, projected to reach 8,640 by 2042. The structure is 90 ft (27.3 m) long and 32 ft wide. If it were closed, the detour would be 34.2 mi (55 km).

Location

Open in Google Maps
CarriesS.H. 74
CrossesCottonwood Creek Oflow
Location3.2 MI N Okla. C/L
RouteState Highway 74
CountyLogan County
StateOklahoma
Coordinates35.77197, -97.58483
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
Channel and channel protection7 GoodSome minor problems.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.1 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans8
Design loadH 20
Structure length90 ft (27.3 m)
Longest span10 ft (3 m)
Deck width32 ft (9.9 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,400 (2022)
Projected traffic8,640 by 2042
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed34.2 mi (55 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$752,000
NavigationNo navigation control on waterway

Frequently asked questions

When was S.H. 74 over Cottonwood Creek Oflow built?

It was built in 1937, making it 88 years old in 2025.

What condition is S.H. 74 over Cottonwood Creek Oflow 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 September 2024.

How much traffic does S.H. 74 over Cottonwood Creek Oflow carry?

About 5,400 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is S.H. 74 over Cottonwood Creek Oflow?

The structure is 90 ft (27.3 m) long with a longest span of 10 ft (3 m) and a deck 32 ft wide.

Who owns S.H. 74 over Cottonwood Creek Oflow?

It is owned by the State Highway Agency.