US Bridges

S.H. 56 Loop over Okmulgee Creek

Fair

Okmulgee County, Oklahoma · 0.6 E JCT US-75 · Structure no. 178830000000000

Built
1970
55 years old
Condition
Fair
inspected January 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
126 ft
3 main spans
Daily traffic
3,300
2022 count
Owner
State
State Highway Agency

About this bridge

S.H. 56 Loop over Okmulgee Creek is a prestressed concrete stringer/multi-beam or girder carrying S.H. 56 Loop over Okmulgee Creek in Okmulgee County, Oklahoma. It was built in 1970, so it is 55 years old, older 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 5 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 3,300 vehicles a day, roughly 5% of them trucks, projected to reach 5,280 by 2042. The structure is 126 ft (38.4 m) long and 46 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesS.H. 56 Loop
CrossesOkmulgee Creek
Location0.6 E JCT US-75
RouteState Highway 56
CountyOkmulgee County
StateOklahoma
Coordinates35.64642, -95.95157
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
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 evaluation6: Equal to 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 rating65.9 US tons
Inventory rating39.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length126 ft (38.4 m)
Longest span45 ft (13.7 m)
Deck width46 ft (14 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,300 (2022)
Projected traffic5,280 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
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$2.5 million
NavigationNo navigation control on waterway

Frequently asked questions

When was S.H. 56 Loop over Okmulgee Creek built?

It was built in 1970, making it 55 years old in 2025.

What condition is S.H. 56 Loop over Okmulgee Creek 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 January 2023.

How much traffic does S.H. 56 Loop over Okmulgee Creek carry?

About 3,300 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is S.H. 56 Loop over Okmulgee Creek?

The structure is 126 ft (38.4 m) long with a longest span of 45 ft (13.7 m) and a deck 46 ft wide.

Who owns S.H. 56 Loop over Okmulgee Creek?

It is owned by the State Highway Agency.