US Bridges

I-35 over Salt Fork Arkansas River

Fair

Kay County, Oklahoma · 5.6 MI N Noble C/L · Structure no. 145110000000000

Built
1959
66 years old, rebuilt 1984
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
583 ft
7 main spans
Daily traffic
8,750
2022 count
Owner
State
State Highway Agency

About this bridge

I-35 over Salt Fork Arkansas River is a steel continuous stringer/multi-beam or girder carrying I-35 over Salt Fork Arkansas River in Kay County, Oklahoma. It was built in 1959 and reconstructed in 1984, 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 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 8,750 vehicles a day, roughly 36% of them trucks, projected to reach 14,000 by 2042. The structure is 583 ft (177.7 m) long and 40 ft wide.

Location

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CarriesI-35
CrossesSalt Fork Arkansas River
Location5.6 MI N Noble C/L
RouteInterstate 35
CountyKay County
StateOklahoma
Coordinates36.67523, -97.34565
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating26 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans7
Design loadHS 20
Structure length583 ft (177.7 m)
Longest span100 ft (30.5 m)
Deck width40 ft (12.2 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,750 (2022)
Projected traffic14,000 by 2042
Trucks36%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
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$3.7 million
NavigationNo navigation control on waterway

Frequently asked questions

When was I-35 over Salt Fork Arkansas River built?

It was built in 1959, making it 66 years old in 2025. It was reconstructed in 1984.

What condition is I-35 over Salt Fork Arkansas River 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 May 2024.

How much traffic does I-35 over Salt Fork Arkansas River carry?

About 8,750 vehicles per day (2022 count), of which roughly 36% are trucks.

How long is I-35 over Salt Fork Arkansas River?

The structure is 583 ft (177.7 m) long with a longest span of 100 ft (30.5 m) and a deck 40 ft wide.

Who owns I-35 over Salt Fork Arkansas River?

It is owned by the State Highway Agency.