US Bridges

I-35 over Bird Creek

Fair

Logan County, Oklahoma · 300 Feet S. SH 33 · Structure no. 143240000000000

Built
1959
66 years old
Condition
Fair
inspected September 2024
Type
Culvert
Concrete
Length
40 ft
3 main spans
Daily traffic
25,900
2022 count
Owner
State
State Highway Agency

About this bridge

I-35 over Bird Creek is a concrete culvert carrying I-35 over Bird Creek 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 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 25,900 vehicles a day, roughly 12% of them trucks, projected to reach 41,440 by 2042. The structure is 40 ft (12.2 m) long. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesI-35
CrossesBird Creek
Location300 Feet S. SH 33
RouteInterstate 35
CountyLogan County
StateOklahoma
Coordinates35.87733, -97.39372
Functional classRural 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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.1 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length40 ft (12.2 m)
Longest span14 ft (4.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25,900 (2022)
Projected traffic41,440 by 2042
Trucks12%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 km)
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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$1.7 million
NavigationNo navigation control on waterway

Frequently asked questions

When was I-35 over Bird Creek built?

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

What condition is I-35 over Bird Creek 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 I-35 over Bird Creek carry?

About 25,900 vehicles per day (2022 count), of which roughly 12% are trucks.

How long is I-35 over Bird Creek?

The structure is 40 ft (12.2 m) long with a longest span of 14 ft (4.3 m).

Who owns I-35 over Bird Creek?

It is owned by the State Highway Agency.