US Bridges

Airline Rd. over I-35 under

Fair

Garvin County, Oklahoma · 4.1 MI N JCT SH 29 · Structure no. 179270000000000

Built
1970
55 years old
Condition
Fair
inspected January 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
262 ft
3 main spans
Daily traffic
4,250
2022 count
Owner
State
State Highway Agency

About this bridge

Airline Rd. over I-35 under is a steel continuous stringer/multi-beam or girder carrying Airline Rd. over I-35 under in Garvin County, Oklahoma. It was built in 1970, so it is 55 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 4,250 vehicles a day, roughly 26% of them trucks, projected to reach 6,800 by 2042. The structure is 262 ft (79.9 m) long and 42 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

Location

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CarriesAirline Rd.
CrossesI-35 under
Location4.1 MI N JCT SH 29
RouteCounty Highway 2502
CountyGarvin County
StateOklahoma
Coordinates34.7059, -97.24535
Functional classRural Major Collector

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54 US tons
Inventory rating32 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length262 ft (79.9 m)
Longest span100 ft (30.5 m)
Deck width42 ft (12.7 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,250 (2022)
Projected traffic6,800 by 2042
Trucks26%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed11.2 mi (18 km)
TollOn a free road
National Highway SystemNo

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$1.9 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Airline Rd. over I-35 under built?

It was built in 1970, making it 55 years old in 2025.

What condition is Airline Rd. over I-35 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 January 2023.

How much traffic does Airline Rd. over I-35 under carry?

About 4,250 vehicles per day (2022 count), of which roughly 26% are trucks.

How long is Airline Rd. over I-35 under?

The structure is 262 ft (79.9 m) long with a longest span of 100 ft (30.5 m) and a deck 42 ft wide.

Who owns Airline Rd. over I-35 under?

It is owned by the State Highway Agency.