US Bridges

I-44 NB over SW 59th St. under

Fair

Oklahoma County, Oklahoma · 0.7 MI N I-240 · Structure no. 187420000000000

Built
1974
51 years old, rebuilt 1998
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
163 ft
2 main spans
Daily traffic
63,700
2022 count
Owner
State
State Highway Agency

About this bridge

I-44 NB over SW 59th St. under is a steel continuous stringer/multi-beam or girder carrying I-44 NB over SW 59th St. under in Oklahoma County, Oklahoma. It was built in 1974 and reconstructed in 1998, so it is 51 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 63,700 vehicles a day, roughly 12% of them trucks, projected to reach 101,920 by 2042. The structure is 163 ft (49.8 m) long and 72 ft wide.

Location

Open in Google Maps
CarriesI-44 NB
CrossesSW 59th St. under
Location0.7 MI N I-240
RouteInterstate 44
CountyOklahoma County
StateOklahoma
Coordinates35.40659, -97.57667
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
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 geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.3 US tons
Inventory rating35.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length163 ft (49.8 m)
Longest span82 ft (24.9 m)
Deck width72 ft (22 m)
Roadway width69 ft (21.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic63,700 (2022)
Projected traffic101,920 by 2042
Trucks12%
Lanes on structure4
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$3.3 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-44 NB over SW 59th St. under built?

It was built in 1974, making it 51 years old in 2025. It was reconstructed in 1998.

What condition is I-44 NB over SW 59th 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 August 2023.

How much traffic does I-44 NB over SW 59th St. under carry?

About 63,700 vehicles per day (2022 count), of which roughly 12% are trucks.

How long is I-44 NB over SW 59th St. under?

The structure is 163 ft (49.8 m) long with a longest span of 82 ft (24.9 m) and a deck 72 ft wide.

Who owns I-44 NB over SW 59th St. under?

It is owned by the State Highway Agency.