US Bridges

66th ST N. over U.S. 75 under

Good

Tulsa County, Oklahoma · 7.3 MI N of I-244 · Structure no. 224040000000000

Built
1989
36 years old
Condition
Good
inspected October 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
300 ft
2 main spans
Daily traffic
500
2022 count
Owner
State
State Highway Agency

About this bridge

66th ST N. over U.S. 75 under is a prestressed concrete continuous box beam or girders - multiple carrying 66th ST N. over U.S. 75 under in Tulsa County, Oklahoma. It was built in 1989, so it is 36 years old, younger 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 500 vehicles a day, roughly 10% of them trucks, projected to reach 800 by 2042. The structure is 300 ft (91.4 m) long and 71 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
Carries66th ST N.
CrossesU.S. 75 under
Location7.3 MI N of I-244
RouteCity Street 0
CountyTulsa County
StateOklahoma
Coordinates36.24944, -95.93167
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.7 US tons
Inventory rating35.8 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length300 ft (91.4 m)
Longest span158 ft (48.2 m)
Deck width71 ft (21.6 m)
Roadway width68 ft (20.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2022)
Projected traffic800 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.1 mi (5 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$2.3 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was 66th ST N. over U.S. 75 under built?

It was built in 1989, making it 36 years old in 2025.

What condition is 66th ST N. over U.S. 75 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 October 2024.

How much traffic does 66th ST N. over U.S. 75 under carry?

About 500 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is 66th ST N. over U.S. 75 under?

The structure is 300 ft (91.4 m) long with a longest span of 158 ft (48.2 m) and a deck 71 ft wide.

Who owns 66th ST N. over U.S. 75 under?

It is owned by the State Highway Agency.