US Bridges

S.H. 56 over Okmulgee Creek

Good

Okmulgee County, Oklahoma · 0.2 W JCT US-75 · Structure no. 001080000000000

Built
1909
116 years old, rebuilt 1991
Condition
Good
inspected January 2023
Type
Arch - Deck
Masonry
Length
40 ft
1 main span
Daily traffic
9,400
2022 count
Owner
State
State Highway Agency

About this bridge

S.H. 56 over Okmulgee Creek is a masonry arch - deck carrying S.H. 56 over Okmulgee Creek in Okmulgee County, Oklahoma. It was built in 1909 and reconstructed in 1991, so it is 116 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 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 9,400 vehicles a day, roughly 5% of them trucks, projected to reach 15,040 by 2042. The structure is 40 ft (12.2 m) long and 83 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

Location

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CarriesS.H. 56
CrossesOkmulgee Creek
Location0.2 W JCT US-75
RouteState Highway 56
CountyOkmulgee County
StateOklahoma
Coordinates35.62303, -95.96403
Functional classUrban Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
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 evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating22 US tons

Structure

Structure typeArch - Deck
MaterialMasonry
DeckNot applicable
Main spans1
Design loadH 15
Structure length40 ft (12.2 m)
Longest span36 ft (11 m)
Deck width83 ft (25.3 m)
Roadway width49 ft (14.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,400 (2022)
Projected traffic15,040 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed2.5 mi (4 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$2.3 million
NavigationNo navigation control on waterway

Frequently asked questions

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

It was built in 1909, making it 116 years old in 2025. It was reconstructed in 1991.

What condition is S.H. 56 over Okmulgee 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. 56 over Okmulgee Creek carry?

About 9,400 vehicles per day (2022 count), of which roughly 5% are trucks.

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

The structure is 40 ft (12.2 m) long with a longest span of 36 ft (11 m) and a deck 83 ft wide.

Who owns S.H. 56 over Okmulgee Creek?

It is owned by the State Highway Agency.