US Bridges

S.H. 31 Ramp over U.S. 270 under

Fair

Pittsburg County, Oklahoma · 2.3 SE JCT US 69B · Structure no. 196220000000000

Built
1979
46 years old, rebuilt 2020
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
213 ft
2 main spans
Daily traffic
5,700
2022 count
Owner
State
State Highway Agency

About this bridge

S.H. 31 Ramp over U.S. 270 under is a prestressed concrete stringer/multi-beam or girder carrying S.H. 31 Ramp over U.S. 270 under in Pittsburg County, Oklahoma. It was built in 1979 and reconstructed in 2020, so it is 46 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 5,700 vehicles a day, roughly 16% of them trucks, projected to reach 9,120 by 2042. The structure is 213 ft (64.9 m) long and 24 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesS.H. 31 Ramp
CrossesU.S. 270 under
Location2.3 SE JCT US 69B
RouteState Highway 31
CountyPittsburg County
StateOklahoma
Coordinates34.92667, -95.72833
Functional classRural Minor Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating102.6 US tons
Inventory rating41 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length213 ft (64.9 m)
Longest span105 ft (32 m)
Deck width24 ft (7.4 m)
Roadway width21 ft (6.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,700 (2022)
Projected traffic9,120 by 2042
Trucks16%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed5 mi (8 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$2.4 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was S.H. 31 Ramp over U.S. 270 under built?

It was built in 1979, making it 46 years old in 2025. It was reconstructed in 2020.

What condition is S.H. 31 Ramp over U.S. 270 under 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 2023.

How much traffic does S.H. 31 Ramp over U.S. 270 under carry?

About 5,700 vehicles per day (2022 count), of which roughly 16% are trucks.

How long is S.H. 31 Ramp over U.S. 270 under?

The structure is 213 ft (64.9 m) long with a longest span of 105 ft (32 m) and a deck 24 ft wide.

Who owns S.H. 31 Ramp over U.S. 270 under?

It is owned by the State Highway Agency.