US Bridges

I-235 NB over 16st/23 St/R.R./Ramp Und

Fair

Oklahoma County, Oklahoma · 2.1 MI N of I-40 · Structure no. 282130000000000

Built
1989
36 years old
Condition
Fair
inspected June 2024
Type
Box Beam or Girders - Multiple
Steel Continuous
Length
4,112 ft
3 main spans
Daily traffic
46,000
2022 count
Owner
State
State Highway Agency

About this bridge

I-235 NB over 16st/23 St/R.R./Ramp Und is a steel continuous box beam or girders - multiple carrying I-235 NB over 16st/23 St/R.R./Ramp Und in Oklahoma 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.

It carries about 46,000 vehicles a day, roughly 12% of them trucks, projected to reach 73,600 by 2042. The structure is 4,112 ft (1,253.2 m) long and 60 ft wide.

Location

Open in Google Maps
CarriesI-235 NB
Crosses16st/23 St/R.R./Ramp Und
Location2.1 MI N of I-40
RouteInterstate 235
CountyOklahoma County
StateOklahoma
Coordinates35.48542, -97.51064
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.1 US tons
Inventory rating36 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3 (+25 approach)
Design loadHS 20
Structure length4,112 ft (1,253.2 m)
Longest span165 ft (50.3 m)
Deck width60 ft (18.3 m)
Roadway width58 ft (17.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic46,000 (2022)
Projected traffic73,600 by 2042
Trucks12%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and railroad
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$41.1 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-235 NB over 16st/23 St/R.R./Ramp Und built?

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

What condition is I-235 NB over 16st/23 St/R.R./Ramp Und 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 June 2024.

How much traffic does I-235 NB over 16st/23 St/R.R./Ramp Und carry?

About 46,000 vehicles per day (2022 count), of which roughly 12% are trucks.

How long is I-235 NB over 16st/23 St/R.R./Ramp Und?

The structure is 4,112 ft (1,253.2 m) long with a longest span of 165 ft (50.3 m) and a deck 60 ft wide.

Who owns I-235 NB over 16st/23 St/R.R./Ramp Und?

It is owned by the State Highway Agency.