US Bridges

FAU 8320 (e 21 St) over Mingo Creek

FairPosted for load

Tulsa County, Oklahoma · 9500 E 21st ST (wb) · Structure no. 208410000000000

Built
1984
41 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
193 ft
4 main spans
Daily traffic
2,350
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

FAU 8320 (e 21 St) over Mingo Creek is a prestressed concrete stringer/multi-beam or girder carrying FAU 8320 (e 21 St) over Mingo Creek in Tulsa County, Oklahoma. It was built in 1984, so it is 41 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 2,350 vehicles a day, roughly 5% of them trucks, projected to reach 18,520 by 2042. The structure is 193 ft (58.8 m) long and 33 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesFAU 8320 (e 21 St)
CrossesMingo Creek
Location9500 E 21st ST (wb)
RouteCity Street 8320
CountyTulsa County
StateOklahoma
Coordinates36.13356, -95.8706
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
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 evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating29 US tons
Inventory rating17 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length193 ft (58.8 m)
Longest span60 ft (18.3 m)
Deck width33 ft (10.1 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,350 (2022)
Projected traffic18,520 by 2042
Trucks5%
Lanes on structure2
Traffic directionOne-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$716,000
NavigationNo navigation control on waterway

Frequently asked questions

When was FAU 8320 (e 21 St) over Mingo Creek built?

It was built in 1984, making it 41 years old in 2025.

What condition is FAU 8320 (e 21 St) over Mingo 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 FAU 8320 (e 21 St) over Mingo Creek carry?

About 2,350 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is FAU 8320 (e 21 St) over Mingo Creek?

The structure is 193 ft (58.8 m) long with a longest span of 60 ft (18.3 m) and a deck 33 ft wide.

Who owns FAU 8320 (e 21 St) over Mingo Creek?

It is owned by the City or Municipal Highway Agency.