US Bridges

U.S. 412 over I-35 under

Fair

Noble County, Oklahoma · 8.6 MI N JCT US 77 · Structure no. 185670000000000

Built
1973
52 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
203 ft
2 main spans
Daily traffic
2,300
2022 count
Owner
State
State Highway Agency

About this bridge

U.S. 412 over I-35 under is a prestressed concrete stringer/multi-beam or girder carrying U.S. 412 over I-35 under in Noble County, Oklahoma. It was built in 1973, so it is 52 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 2,300 vehicles a day, roughly 25% of them trucks, projected to reach 3,680 by 2042. The structure is 203 ft (61.9 m) long and 50 ft wide.

CarriesU.S. 412
CrossesI-35 under
Location8.6 MI N JCT US 77
RouteU.S. Route 64
Coordinates36.40036, -97.32744
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 inspectionApril 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating79 US tons
Inventory rating34 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length203 ft (61.9 m)
Longest span100 ft (30.5 m)
Deck width50 ft (15.3 m)
Roadway width47 ft (14.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,300 (2022)
Projected traffic3,680 by 2042
Trucks25%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate 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$1.9 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was U.S. 412 over I-35 under built?

It was built in 1973, making it 52 years old in 2025.

What condition is U.S. 412 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 April 2024.

How much traffic does U.S. 412 over I-35 under carry?

About 2,300 vehicles per day (2022 count), of which roughly 25% are trucks.

How long is U.S. 412 over I-35 under?

The structure is 203 ft (61.9 m) long with a longest span of 100 ft (30.5 m) and a deck 50 ft wide.

Who owns U.S. 412 over I-35 under?

It is owned by the State Highway Agency.