US Bridges

I-35 over S.H. 33 under

Fair

Logan County, Oklahoma · JCT I-35 and SH 33 · Structure no. 144140000000000

Built
1959
66 years old, rebuilt 1989
Condition
Fair
inspected September 2024
Type
Slab
Concrete Continuous
Length
162 ft
4 main spans
Daily traffic
12,950
2022 count
Owner
State
State Highway Agency

About this bridge

I-35 over S.H. 33 under is a concrete continuous slab carrying I-35 over S.H. 33 under in Logan County, Oklahoma. It was built in 1959 and reconstructed in 1989, so it is 66 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 12,950 vehicles a day, roughly 12% of them trucks, projected to reach 20,720 by 2042. The structure is 162 ft (49.4 m) long and 41 ft wide.

Location

Open in Google Maps
CarriesI-35
CrossesS.H. 33 under
LocationJCT I-35 and SH 33
RouteInterstate 35
CountyLogan County
StateOklahoma
Coordinates35.87793, -97.39433
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 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 rating59 US tons
Inventory rating35.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length162 ft (49.4 m)
Longest span50 ft (15.2 m)
Deck width41 ft (12.4 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,950 (2022)
Projected traffic20,720 by 2042
Trucks12%
Lanes on structure2
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$2.1 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-35 over S.H. 33 under built?

It was built in 1959, making it 66 years old in 2025. It was reconstructed in 1989.

What condition is I-35 over S.H. 33 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 September 2024.

How much traffic does I-35 over S.H. 33 under carry?

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

How long is I-35 over S.H. 33 under?

The structure is 162 ft (49.4 m) long with a longest span of 50 ft (15.2 m) and a deck 41 ft wide.

Who owns I-35 over S.H. 33 under?

It is owned by the State Highway Agency.