US Bridges

U.S. 270 over Clear Creek Oflow

Fair

Harper County, Oklahoma · 8.7 MI E Beaver C/L · Structure no. 211120000000000

Built
1985
40 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
257 ft
3 main spans
Daily traffic
3,000
2022 count
Owner
State
State Highway Agency

About this bridge

U.S. 270 over Clear Creek Oflow is a prestressed concrete stringer/multi-beam or girder carrying U.S. 270 over Clear Creek Oflow in Harper County, Oklahoma. It was built in 1985, so it is 40 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 3,000 vehicles a day, roughly 25% of them trucks, projected to reach 4,800 by 2042. The structure is 257 ft (78.3 m) long and 42 ft wide. If it were closed, the detour would be 47.2 mi (76 km).

Location

Open in Google Maps
CarriesU.S. 270
CrossesClear Creek Oflow
Location8.7 MI E Beaver C/L
RouteU.S. Route 270
CountyHarper County
StateOklahoma
Coordinates36.62229, -99.84778
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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75.9 US tons
Inventory rating46 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length257 ft (78.3 m)
Longest span85 ft (25.9 m)
Deck width42 ft (12.8 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,000 (2022)
Projected traffic4,800 by 2042
Trucks25%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRelief for waterway
Detour if closed47.2 mi (76 km)
TollOn a free road
National Highway SystemYes

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$2.3 million
NavigationNo navigation control on waterway

Frequently asked questions

When was U.S. 270 over Clear Creek Oflow built?

It was built in 1985, making it 40 years old in 2025.

What condition is U.S. 270 over Clear 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 July 2024.

How much traffic does U.S. 270 over Clear Creek Oflow carry?

About 3,000 vehicles per day (2022 count), of which roughly 25% are trucks.

How long is U.S. 270 over Clear Creek Oflow?

The structure is 257 ft (78.3 m) long with a longest span of 85 ft (25.9 m) and a deck 42 ft wide.

Who owns U.S. 270 over Clear Creek Oflow?

It is owned by the State Highway Agency.