US Bridges

S.H. 34 over Flat Creek

Good

Beckham County, Oklahoma · 4.3 MI S JCT S.H. 152 · Structure no. 037430000000000

Built
1932
93 years old, rebuilt 2012
Condition
Good
inspected January 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
91 ft
3 main spans
Daily traffic
1,000
2022 count
Owner
State
State Highway Agency

About this bridge

S.H. 34 over Flat Creek is a steel stringer/multi-beam or girder carrying S.H. 34 over Flat Creek in Beckham County, Oklahoma. It was built in 1932 and reconstructed in 2012, so it is 93 years old, older 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,000 vehicles a day, roughly 15% of them trucks, projected to reach 1,600 by 2042. The structure is 91 ft (27.7 m) long and 32 ft wide. If it were closed, the detour would be 16.8 mi (27 km).

Location

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CarriesS.H. 34
CrossesFlat Creek
Location4.3 MI S JCT S.H. 152
RouteState Highway 34
CountyBeckham County
StateOklahoma
Coordinates35.22931, -99.50559
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating83 US tons
Inventory rating64 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length91 ft (27.7 m)
Longest span30 ft (9.1 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,000 (2022)
Projected traffic1,600 by 2042
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.8 mi (27 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.4 million
NavigationNo navigation control on waterway

Frequently asked questions

When was S.H. 34 over Flat Creek built?

It was built in 1932, making it 93 years old in 2025. It was reconstructed in 2012.

What condition is S.H. 34 over Flat 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 January 2023.

How much traffic does S.H. 34 over Flat Creek carry?

About 1,000 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is S.H. 34 over Flat Creek?

The structure is 91 ft (27.7 m) long with a longest span of 30 ft (9.1 m) and a deck 32 ft wide.

Who owns S.H. 34 over Flat Creek?

It is owned by the State Highway Agency.