US Bridges

U.S. 75 SB over 56th St. N. under

Good

Tulsa County, Oklahoma · 5.9 MI N of I-244 · Structure no. 223290000000000

Built
1989
36 years old
Condition
Good
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
100 ft
1 main span
Daily traffic
18,250
2022 count
Owner
State
State Highway Agency

About this bridge

U.S. 75 SB over 56th St. N. under is a prestressed concrete stringer/multi-beam or girder carrying U.S. 75 SB over 56th St. N. 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 18,250 vehicles a day, roughly 8% of them trucks, projected to reach 29,200 by 2042. The structure is 100 ft (30.5 m) long and 41 ft wide.

Location

Open in Google Maps
CarriesU.S. 75 SB
Crosses56th St. N. under
Location5.9 MI N of I-244
RouteU.S. Route 75
CountyTulsa County
StateOklahoma
Coordinates36.23502, -95.9453
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Superstructure8 Very GoodNo problems noted.
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 geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70.9 US tons
Inventory rating54.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length100 ft (30.5 m)
Longest span100 ft (30.5 m)
Deck width41 ft (12.5 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,250 (2022)
Projected traffic29,200 by 2042
Trucks8%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes

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$2.1 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was U.S. 75 SB over 56th St. N. under built?

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

What condition is U.S. 75 SB over 56th St. N. 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 U.S. 75 SB over 56th St. N. under carry?

About 18,250 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is U.S. 75 SB over 56th St. N. under?

The structure is 100 ft (30.5 m) long with a longest span of 100 ft (30.5 m) and a deck 41 ft wide.

Who owns U.S. 75 SB over 56th St. N. under?

It is owned by the State Highway Agency.