US Bridges

I-35 over Walnut Creek Oflow

Fair

McClain County, Oklahoma · .6 MI N JCT SH 39 · Structure no. 169590000000000

Built
1967
58 years old, rebuilt 2011
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
121 ft
3 main spans
Daily traffic
15,100
2022 count
Owner
State
State Highway Agency

About this bridge

I-35 over Walnut Creek Oflow is a steel stringer/multi-beam or girder carrying I-35 over Walnut Creek Oflow in McClain County, Oklahoma. It was built in 1967 and reconstructed in 2011, 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 15,100 vehicles a day, roughly 12% of them trucks, projected to reach 24,160 by 2042. The structure is 121 ft (36.9 m) long and 40 ft wide.

Location

Open in Google Maps
CarriesI-35
CrossesWalnut Creek Oflow
Location.6 MI N JCT SH 39
RouteInterstate 35
CountyMcClain County
StateOklahoma
Coordinates35.00683, -97.37596
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating45 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length121 ft (36.9 m)
Longest span40 ft (12.2 m)
Deck width40 ft (12.2 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,100 (2022)
Projected traffic24,160 by 2042
Trucks12%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesRelief for waterway
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$2.5 million
NavigationNo navigation control on waterway

Frequently asked questions

When was I-35 over Walnut Creek Oflow built?

It was built in 1967, making it 58 years old in 2025. It was reconstructed in 2011.

What condition is I-35 over Walnut Creek Oflow 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 2023.

How much traffic does I-35 over Walnut Creek Oflow carry?

About 15,100 vehicles per day (2022 count), of which roughly 12% are trucks.

How long is I-35 over Walnut Creek Oflow?

The structure is 121 ft (36.9 m) long with a longest span of 40 ft (12.2 m) and a deck 40 ft wide.

Who owns I-35 over Walnut Creek Oflow?

It is owned by the State Highway Agency.