US Bridges

S.H. 66 over I-35 under

Fair

Oklahoma County, Oklahoma · 3.2 MI N of Turnpike · Structure no. 213360000000000

Built
1986
39 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
202 ft
2 main spans
Daily traffic
19,200
2022 count
Owner
State
State Highway Agency

About this bridge

S.H. 66 over I-35 under is a prestressed concrete stringer/multi-beam or girder carrying S.H. 66 over I-35 under in Oklahoma County, Oklahoma. It was built in 1986, so it is 39 years old, younger 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 19,200 vehicles a day, roughly 7% of them trucks, projected to reach 30,720 by 2042. The structure is 202 ft (61.7 m) long and 102 ft wide.

Location

Open in Google Maps
CarriesS.H. 66
CrossesI-35 under
Location3.2 MI N of Turnpike
RouteState Highway 66
CountyOklahoma County
StateOklahoma
Coordinates35.65202, -97.42473
Functional classUrban Other Principal Arterial

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 inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating100 US tons
Inventory rating38 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length202 ft (61.7 m)
Longest span101 ft (30.8 m)
Deck width102 ft (31.1 m)
Roadway width92 ft (28 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,200 (2022)
Projected traffic30,720 by 2042
Trucks7%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed—
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$5.8 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was S.H. 66 over I-35 under built?

It was built in 1986, making it 39 years old in 2025.

What condition is S.H. 66 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 May 2024.

How much traffic does S.H. 66 over I-35 under carry?

About 19,200 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is S.H. 66 over I-35 under?

The structure is 202 ft (61.7 m) long with a longest span of 101 ft (30.8 m) and a deck 102 ft wide.

Who owns S.H. 66 over I-35 under?

It is owned by the State Highway Agency.