US Bridges

U.S. 75 Ramp N-W over U.S. 75 SB under

Fair

Tulsa County, Oklahoma · 0.1 MI N JCT I-244 · Structure no. 180580000000000

Built
1971
54 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
141 ft
2 main spans
Daily traffic
36,600
2022 count
Owner
State
State Highway Agency

About this bridge

U.S. 75 Ramp N-W over U.S. 75 SB under is a steel continuous stringer/multi-beam or girder carrying U.S. 75 Ramp N-W over U.S. 75 SB under in Tulsa County, Oklahoma. It was built in 1971, so it is 54 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 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 36,600 vehicles a day, roughly 8% of them trucks, projected to reach 58,560 by 2042. The structure is 141 ft (43 m) long and 24 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesU.S. 75 Ramp N-W
CrossesU.S. 75 SB under
Location0.1 MI N JCT I-244
RouteU.S. Route 75
CountyTulsa County
StateOklahoma
Coordinates36.16116, -95.98131
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 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 rating61.9 US tons
Inventory rating37 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length141 ft (43 m)
Longest span106 ft (32.3 m)
Deck width24 ft (7.3 m)
Roadway width21 ft (6.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic36,600 (2022)
Projected traffic58,560 by 2042
Trucks8%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 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$1.7 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was U.S. 75 Ramp N-W over U.S. 75 SB under built?

It was built in 1971, making it 54 years old in 2025.

What condition is U.S. 75 Ramp N-W over U.S. 75 SB 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 June 2023.

How much traffic does U.S. 75 Ramp N-W over U.S. 75 SB under carry?

About 36,600 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is U.S. 75 Ramp N-W over U.S. 75 SB under?

The structure is 141 ft (43 m) long with a longest span of 106 ft (32.3 m) and a deck 24 ft wide.

Who owns U.S. 75 Ramp N-W over U.S. 75 SB under?

It is owned by the State Highway Agency.