US Bridges

I-35 N.B. over BNSF R.R. under

Fair

Noble County, Oklahoma · 3.3MI S JCT US 77 · Structure no. 144830000000000

Built
1959
66 years old, rebuilt 1974
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
244 ft
3 main spans
Daily traffic
8,100
2022 count
Owner
State
State Highway Agency

About this bridge

I-35 N.B. over BNSF R.R. under is a steel continuous stringer/multi-beam or girder carrying I-35 N.B. over BNSF R.R. under in Noble County, Oklahoma. It was built in 1959 and reconstructed in 1974, 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 8,100 vehicles a day, roughly 36% of them trucks, projected to reach 12,960 by 2042. The structure is 244 ft (74.4 m) long and 42 ft wide.

Location

Open in Google Maps
CarriesI-35 N.B.
CrossesBNSF R.R. under
Location3.3MI S JCT US 77
RouteInterstate 35
CountyNoble County
StateOklahoma
Coordinates36.22679, -97.328
Functional classRural 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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41 US tons
Inventory rating25 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length244 ft (74.4 m)
Longest span93 ft (28.3 m)
Deck width42 ft (12.9 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,100 (2022)
Projected traffic12,960 by 2042
Trucks36%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
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$2.7 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-35 N.B. over BNSF R.R. under built?

It was built in 1959, making it 66 years old in 2025. It was reconstructed in 1974.

What condition is I-35 N.B. over BNSF R.R. 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 I-35 N.B. over BNSF R.R. under carry?

About 8,100 vehicles per day (2022 count), of which roughly 36% are trucks.

How long is I-35 N.B. over BNSF R.R. under?

The structure is 244 ft (74.4 m) long with a longest span of 93 ft (28.3 m) and a deck 42 ft wide.

Who owns I-35 N.B. over BNSF R.R. under?

It is owned by the State Highway Agency.