US Bridges

S.H. 74B over N. Fork Walnut Creek

Good

McClain County, Oklahoma · 5.2 Mi. E. Jct. SH76 · Structure no. 240660000000000

Built
1995
30 years old
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
334 ft
3 main spans
Daily traffic
1,100
2022 count
Owner
State
State Highway Agency

About this bridge

S.H. 74B over N. Fork Walnut Creek is a prestressed concrete stringer/multi-beam or girder carrying S.H. 74B over N. Fork Walnut Creek in McClain County, Oklahoma. It was built in 1995, so it is 30 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 1,100 vehicles a day, roughly 15% of them trucks, projected to reach 1,760 by 2042. The structure is 334 ft (101.8 m) long and 42 ft wide. If it were closed, the detour would be 19.3 mi (31 km).

Location

Open in Google Maps
CarriesS.H. 74B
CrossesN. Fork Walnut Creek
Location5.2 Mi. E. Jct. SH76
RouteState Highway 74B
CountyMcClain County
StateOklahoma
Coordinates35.10237, -97.56096
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.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating45 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length334 ft (101.8 m)
Longest span112 ft (34.1 m)
Deck width42 ft (12.9 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,100 (2022)
Projected traffic1,760 by 2042
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.3 mi (31 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$2.6 million
NavigationNo navigation control on waterway

Frequently asked questions

When was S.H. 74B over N. Fork Walnut Creek built?

It was built in 1995, making it 30 years old in 2025.

What condition is S.H. 74B over N. Fork Walnut Creek 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 July 2023.

How much traffic does S.H. 74B over N. Fork Walnut Creek carry?

About 1,100 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is S.H. 74B over N. Fork Walnut Creek?

The structure is 334 ft (101.8 m) long with a longest span of 112 ft (34.1 m) and a deck 42 ft wide.

Who owns S.H. 74B over N. Fork Walnut Creek?

It is owned by the State Highway Agency.