US Bridges

S.H. 71 over Ninnahead Creek

Fair

Muskogee County, Oklahoma · 4.7 MI E C/L · Structure no. 139880000000000

Built
1958
67 years old
Condition
Fair
inspected May 2023
Type
Culvert
Concrete
Length
21 ft
2 main spans
Daily traffic
550
2022 count
Owner
State
State Highway Agency

About this bridge

S.H. 71 over Ninnahead Creek is a concrete culvert carrying S.H. 71 over Ninnahead Creek in Muskogee County, Oklahoma. It was built in 1958, so it is 67 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 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 550 vehicles a day, roughly 15% of them trucks, projected to reach 880 by 2042. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 14.9 mi (24 km).

Location

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CarriesS.H. 71
CrossesNinnahead Creek
Location4.7 MI E C/L
RouteState Highway 71
CountyMuskogee County
StateOklahoma
Coordinates35.33331, -95.27594
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54 US tons
Inventory rating32.4 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length21 ft (6.4 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic550 (2022)
Projected traffic880 by 2042
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$644,000
NavigationNo navigation control on waterway

Frequently asked questions

When was S.H. 71 over Ninnahead Creek built?

It was built in 1958, making it 67 years old in 2025.

What condition is S.H. 71 over Ninnahead 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 May 2023.

How much traffic does S.H. 71 over Ninnahead Creek carry?

About 550 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is S.H. 71 over Ninnahead Creek?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m).

Who owns S.H. 71 over Ninnahead Creek?

It is owned by the State Highway Agency.