US Bridges

91st St. over U.S. 75 under

Fair

Tulsa County, Oklahoma · 6 MI N JCT SH 67 · Structure no. 165630000000000

Built
1965
60 years old
Condition
Fair
inspected October 2024
Type
Slab
Concrete Continuous
Length
177 ft
4 main spans
Daily traffic
1,200
2022 count
Owner
State
State Highway Agency

About this bridge

91st St. over U.S. 75 under is a concrete continuous slab carrying 91st St. over U.S. 75 under in Tulsa County, Oklahoma. It was built in 1965, so it is 60 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 1,200 vehicles a day, roughly 5% of them trucks, projected to reach 1,920 by 2042. The structure is 177 ft (53.9 m) long and 31 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
Carries91st St.
CrossesU.S. 75 under
Location6 MI N JCT SH 67
RouteCity Street 0
CountyTulsa County
StateOklahoma
Coordinates36.03194, -96.00944
Functional classUrban 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
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
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating35.8 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length177 ft (53.9 m)
Longest span56 ft (17.1 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,200 (2022)
Projected traffic1,920 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.1 mi (5 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$2.6 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was 91st St. over U.S. 75 under built?

It was built in 1965, making it 60 years old in 2025.

What condition is 91st St. over U.S. 75 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 October 2024.

How much traffic does 91st St. over U.S. 75 under carry?

About 1,200 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is 91st St. over U.S. 75 under?

The structure is 177 ft (53.9 m) long with a longest span of 56 ft (17.1 m) and a deck 31 ft wide.

Who owns 91st St. over U.S. 75 under?

It is owned by the State Highway Agency.