US Bridges

N4006 (s 90th E) over Audubon Creek

FairPosted for load

Tulsa County, Oklahoma · 2750S 90th E Ave. · Structure no. 222890000000000

Built
1989
36 years old
Condition
Fair
inspected May 2024
Type
Tee Beam
Prestressed Concrete
Length
78 ft
2 main spans
Daily traffic
300
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

N4006 (s 90th E) over Audubon Creek is a prestressed concrete tee beam carrying N4006 (s 90th E) over Audubon Creek in Tulsa County, Oklahoma. It was built in 1989, so it is 36 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. Its operating status is: posted for load restriction.

It carries about 300 vehicles a day, roughly 5% of them trucks, projected to reach 480 by 2042. The structure is 78 ft (23.8 m) long and 56 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesN4006 (s 90th E)
CrossesAudubon Creek
Location2750S 90th E Ave.
RouteCity Street N4006
CountyTulsa County
StateOklahoma
Coordinates36.12352, -95.87577
Functional classUrban Local

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 protection8 Very GoodNo problems noted.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating32 US tons
Inventory rating19 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length78 ft (23.8 m)
Longest span38 ft (11.6 m)
Deck width56 ft (17.1 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic300 (2022)
Projected traffic480 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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$451,000
NavigationNo navigation control on waterway

Frequently asked questions

When was N4006 (s 90th E) over Audubon Creek built?

It was built in 1989, making it 36 years old in 2025.

What condition is N4006 (s 90th E) over Audubon Creek 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 May 2024.

How much traffic does N4006 (s 90th E) over Audubon Creek carry?

About 300 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is N4006 (s 90th E) over Audubon Creek?

The structure is 78 ft (23.8 m) long with a longest span of 38 ft (11.6 m) and a deck 56 ft wide.

Who owns N4006 (s 90th E) over Audubon Creek?

It is owned by the City or Municipal Highway Agency.