US Bridges

I-44 NB over SW 20th St. under

Fair

Oklahoma County, Oklahoma · 3.5 MI N I-240 · Structure no. 190290000000000

Built
1975
50 years old
Condition
Fair
inspected October 2024
Type
Slab
Concrete Continuous
Length
101 ft
3 main spans
Daily traffic
61,950
2022 count
Owner
State
State Highway Agency

About this bridge

I-44 NB over SW 20th St. under is a concrete continuous slab carrying I-44 NB over SW 20th St. under in Oklahoma County, Oklahoma. It was built in 1975, so it is 50 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 61,950 vehicles a day, roughly 12% of them trucks, projected to reach 99,120 by 2042. The structure is 101 ft (30.9 m) long and 55 ft wide.

Location

Open in Google Maps
CarriesI-44 NB
CrossesSW 20th St. under
Location3.5 MI N I-240
RouteInterstate 44
CountyOklahoma County
StateOklahoma
Coordinates35.44453, -97.56966
Functional classUrban Principal Arterial - Interstate

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
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 geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating37 US tons
Inventory rating22 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length101 ft (30.9 m)
Longest span40 ft (12.2 m)
Deck width55 ft (16.9 m)
Roadway width53 ft (16.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic61,950 (2022)
Projected traffic99,120 by 2042
Trucks12%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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$2.9 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-44 NB over SW 20th St. under built?

It was built in 1975, making it 50 years old in 2025.

What condition is I-44 NB over SW 20th St. 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 I-44 NB over SW 20th St. under carry?

About 61,950 vehicles per day (2022 count), of which roughly 12% are trucks.

How long is I-44 NB over SW 20th St. under?

The structure is 101 ft (30.9 m) long with a longest span of 40 ft (12.2 m) and a deck 55 ft wide.

Who owns I-44 NB over SW 20th St. under?

It is owned by the State Highway Agency.