US Bridges

Old I-40 WB over Blackwelder Ave. under

Fair

Oklahoma County, Oklahoma · 1.5 MI E May Ave · Structure no. 165020000000000

Built
1965
60 years old, rebuilt 1987
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
128 ft
3 main spans
Daily traffic
5,000
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Old I-40 WB over Blackwelder Ave. under is a steel continuous stringer/multi-beam or girder carrying Old I-40 WB over Blackwelder Ave. under in Oklahoma County, Oklahoma. It was built in 1965 and reconstructed in 1987, 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 5,000 vehicles a day, roughly 12% of them trucks, projected to reach 8,000 by 2042. The structure is 128 ft (39 m) long and 64 ft wide.

Location

Open in Google Maps
CarriesOld I-40 WB
CrossesBlackwelder Ave. under
Location1.5 MI E May Ave
RouteCity Street 0
CountyOklahoma County
StateOklahoma
Coordinates35.46576, -97.53917
Functional classUrban 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.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2023
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 geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66.4 US tons
Inventory rating39.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length128 ft (39 m)
Longest span59 ft (18 m)
Deck width64 ft (19.5 m)
Roadway width61 ft (18.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,000 (2022)
Projected traffic8,000 by 2042
Trucks12%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
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$3.5 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Old I-40 WB over Blackwelder Ave. under built?

It was built in 1965, making it 60 years old in 2025. It was reconstructed in 1987.

What condition is Old I-40 WB over Blackwelder Ave. 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 August 2023.

How much traffic does Old I-40 WB over Blackwelder Ave. under carry?

About 5,000 vehicles per day (2022 count), of which roughly 12% are trucks.

How long is Old I-40 WB over Blackwelder Ave. under?

The structure is 128 ft (39 m) long with a longest span of 59 ft (18 m) and a deck 64 ft wide.

Who owns Old I-40 WB over Blackwelder Ave. under?

It is owned by the City or Municipal Highway Agency.