US Bridges

NW 50th St. over S.H. 74 under

Fair

Oklahoma County, Oklahoma · 1.0 MI N I-44 · Structure no. 210920000000000

Built
1985
40 years old
Condition
Fair
inspected February 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
199 ft
2 main spans
Daily traffic
5,000
2022 count
Owner
State
State Highway Agency

About this bridge

NW 50th St. over S.H. 74 under is a prestressed concrete stringer/multi-beam or girder carrying NW 50th St. over S.H. 74 under in Oklahoma County, Oklahoma. It was built in 1985, so it is 40 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 5,000 vehicles a day, roughly 5% of them trucks, projected to reach 8,000 by 2042. The structure is 199 ft (60.7 m) long and 106 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesNW 50th St.
CrossesS.H. 74 under
Location1.0 MI N I-44
RouteCity Street 0
CountyOklahoma County
StateOklahoma
Coordinates35.52209, -97.57635
Functional classUrban Minor 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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating83 US tons
Inventory rating40 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length199 ft (60.7 m)
Longest span102 ft (31.1 m)
Deck width106 ft (32.2 m)
Roadway width82 ft (25 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,000 (2022)
Projected traffic8,000 by 2042
Trucks5%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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$5.7 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was NW 50th St. over S.H. 74 under built?

It was built in 1985, making it 40 years old in 2025.

What condition is NW 50th St. over S.H. 74 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 February 2023.

How much traffic does NW 50th St. over S.H. 74 under carry?

About 5,000 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is NW 50th St. over S.H. 74 under?

The structure is 199 ft (60.7 m) long with a longest span of 102 ft (31.1 m) and a deck 106 ft wide.

Who owns NW 50th St. over S.H. 74 under?

It is owned by the State Highway Agency.