US Bridges

College Ave. over I-35 under

Fair

Logan County, Oklahoma · 11.4 MI N Okla. C/L · Structure no. 144400000000000

Built
1959
66 years old
Condition
Fair
inspected September 2024
Type
Slab
Concrete Continuous
Length
172 ft
4 main spans
Daily traffic
415
2022 count
Owner
State
State Highway Agency

About this bridge

College Ave. over I-35 under is a concrete continuous slab carrying College Ave. over I-35 under in Logan County, Oklahoma. It was built in 1959, 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 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 415 vehicles a day, roughly 15% of them trucks, projected to reach 664 by 2042. The structure is 172 ft (52.4 m) long and 29 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesCollege Ave.
CrossesI-35 under
Location11.4 MI N Okla. C/L
RouteCounty Highway E0780
CountyLogan County
StateOklahoma
Coordinates35.88519, -97.39441
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadH 15
Structure length172 ft (52.4 m)
Longest span55 ft (16.8 m)
Deck width29 ft (8.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic415 (2022)
Projected traffic664 by 2042
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 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 College Ave. over I-35 under built?

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

What condition is College Ave. 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 September 2024.

How much traffic does College Ave. over I-35 under carry?

About 415 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is College Ave. over I-35 under?

The structure is 172 ft (52.4 m) long with a longest span of 55 ft (16.8 m) and a deck 29 ft wide.

Who owns College Ave. over I-35 under?

It is owned by the State Highway Agency.