US Bridges

12th St. over I-35 under

Fair

Cleveland County, Oklahoma · 11.4 MI N Mcclain C/L · Structure no. 170190000000000

Built
1967
58 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
278 ft
4 main spans
Daily traffic
5,000
2022 count
Owner
State
State Highway Agency

About this bridge

12th St. over I-35 under is a steel continuous stringer/multi-beam or girder carrying 12th St. over I-35 under in Cleveland County, Oklahoma. It was built in 1967, so it is 58 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 5% of them trucks, projected to reach 8,000 by 2042. The structure is 278 ft (84.7 m) long and 58 ft wide. If it were closed, the detour would be 18 mi (29 km).

Location

Open in Google Maps
Carries12th St.
CrossesI-35 under
Location11.4 MI N Mcclain C/L
RouteCity Street 0
CountyCleveland County
StateOklahoma
Coordinates35.3487, -97.49514
Functional classUrban Collector

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 inspectionOctober 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 geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55 US tons
Inventory rating33 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4 (+2 approach)
Design loadHS 20
Structure length278 ft (84.7 m)
Longest span66 ft (20.1 m)
Deck width58 ft (17.7 m)
Roadway width50 ft (15.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,000 (2022)
Projected traffic8,000 by 2042
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed18 mi (29 km)
TollOn a free road
National Highway SystemNo

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$5.9 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was 12th St. over I-35 under built?

It was built in 1967, making it 58 years old in 2025.

What condition is 12th St. over I-35 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 2023.

How much traffic does 12th St. over I-35 under carry?

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

How long is 12th St. over I-35 under?

The structure is 278 ft (84.7 m) long with a longest span of 66 ft (20.1 m) and a deck 58 ft wide.

Who owns 12th St. over I-35 under?

It is owned by the State Highway Agency.