US Bridges

N4390 over Little Buffalo Creek

FairPosted for load

Latimer County, Oklahoma · 5.5 E; 1.3 N Yanush · Structure no. 247030000000000

Built
1996
29 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
90 ft
3 main spans
Daily traffic
75
2022 count
Owner
County
County Highway Agency

About this bridge

N4390 over Little Buffalo Creek is a steel stringer/multi-beam or girder carrying N4390 over Little Buffalo Creek in Latimer County, Oklahoma. It was built in 1996, so it is 29 years old, younger 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. Its operating status is: posted for load restriction.

It carries about 75 vehicles a day, roughly 10% of them trucks, projected to reach 120 by 2042. The structure is 90 ft (27.4 m) long and 24 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesN4390
CrossesLittle Buffalo Creek
Location5.5 E; 1.3 N Yanush
RouteCounty Highway N4390
CountyLatimer County
StateOklahoma
Coordinates34.72799, -95.21765
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating35.1 US tons
Inventory rating21.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length90 ft (27.4 m)
Longest span29 ft (8.8 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75 (2022)
Projected traffic120 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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$480,000
NavigationNo navigation control on waterway

Frequently asked questions

When was N4390 over Little Buffalo Creek built?

It was built in 1996, making it 29 years old in 2025.

What condition is N4390 over Little Buffalo 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 July 2024.

How much traffic does N4390 over Little Buffalo Creek carry?

About 75 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is N4390 over Little Buffalo Creek?

The structure is 90 ft (27.4 m) long with a longest span of 29 ft (8.8 m) and a deck 24 ft wide.

Who owns N4390 over Little Buffalo Creek?

It is owned by the County Highway Agency.