US Bridges

I-35 NB over S.H. 51 under

Good

Payne County, Oklahoma · 8.9N Logan C/L · Structure no. 281820000000000

Built
2007
18 years old
Condition
Good
inspected January 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
225 ft
2 main spans
Daily traffic
10,100
2022 count
Owner
State
State Highway Agency

About this bridge

I-35 NB over S.H. 51 under is a prestressed concrete stringer/multi-beam or girder carrying I-35 NB over S.H. 51 under in Payne County, Oklahoma. It was built in 2007, so it is 18 years old, younger than the Oklahoma average of 47.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 10,100 vehicles a day, roughly 36% of them trucks, projected to reach 16,160 by 2042. The structure is 225 ft (68.7 m) long and 41 ft wide.

Location

Open in Google Maps
CarriesI-35 NB
CrossesS.H. 51 under
Location8.9N Logan C/L
RouteInterstate 35
CountyPayne County
StateOklahoma
Coordinates36.11537, -97.34496
Functional classRural Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75.3 US tons
Inventory rating38.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length225 ft (68.7 m)
Longest span120 ft (36.6 m)
Deck width41 ft (12.5 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,100 (2022)
Projected traffic16,160 by 2042
Trucks36%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-35 NB over S.H. 51 under built?

It was built in 2007, making it 18 years old in 2025.

What condition is I-35 NB over S.H. 51 under in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in January 2024.

How much traffic does I-35 NB over S.H. 51 under carry?

About 10,100 vehicles per day (2022 count), of which roughly 36% are trucks.

How long is I-35 NB over S.H. 51 under?

The structure is 225 ft (68.7 m) long with a longest span of 120 ft (36.6 m) and a deck 41 ft wide.

Who owns I-35 NB over S.H. 51 under?

It is owned by the State Highway Agency.