I-35 over E-W 161 under

Good

Garvin County, Oklahoma · 2.1 MI N JCT SH 29 · Structure no. 171990000000000

Built: 1968; 57 years old, rebuilt 2020
Condition: Good; inspected January 2023
Type: Frame; Concrete Continuous
Length: 98 ft; 3 main spans
Daily traffic: 16,600; 2022 count
Owner: State; State Highway Agency

About this bridge

I-35 over E-W 161 under is a concrete continuous frame carrying I-35 over E-W 161 under in Garvin County, Oklahoma. It was built in 1968 and reconstructed in 2020, so it is 57 years old, older 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 16,600 vehicles a day, roughly 36% of them trucks, projected to reach 26,560 by 2042. The structure is 98 ft (29.9 m) long and 40 ft wide.

Location

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CarriesI-35

CrossesE-W 161 under

Location2.1 MI N JCT SH 29

RouteInterstate 35

CountyGarvin County

StateOklahoma

Coordinates34.68111, -97.22763

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.

Component	Rating	Meaning
Deck	8 Very Good	No problems noted.
Superstructure	8 Very Good	No problems noted.
Substructure	8 Very Good	No problems noted.

Last inspectionJanuary 2023

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 rating53 US tons

Inventory rating32 US tons

Structure

Structure typeFrame

MaterialConcrete Continuous

DeckConcrete, cast-in-place

Main spans3

Design loadHS 20

Structure length98 ft (29.9 m)

Longest span42 ft (12.8 m)

Deck width40 ft (12.1 m)

Roadway width38 ft (11.6 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,600 (2022)

Projected traffic26,560 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$1.4 million

NavigationNot applicable (no waterway)

Frequently asked questions

When was I-35 over E-W 161 under built?

It was built in 1968, making it 57 years old in 2025. It was reconstructed in 2020.

What condition is I-35 over E-W 161 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 2023.

How much traffic does I-35 over E-W 161 under carry?

About 16,600 vehicles per day (2022 count), of which roughly 36% are trucks.

How long is I-35 over E-W 161 under?

The structure is 98 ft (29.9 m) long with a longest span of 42 ft (12.8 m) and a deck 40 ft wide.

Who owns I-35 over E-W 161 under?

It is owned by the State Highway Agency.