US Bridges

N2320 over Oak Creek

FairPosted for load

Washita County, Oklahoma · 2.3S 1.E of Lake Valle · Structure no. 120080000000000

Built
1950
75 years old, rebuilt 2003
Condition
Fair
inspected January 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
44 ft
2 main spans
Daily traffic
25
2022 count
Owner
County
County Highway Agency

About this bridge

N2320 over Oak Creek is a steel continuous stringer/multi-beam or girder carrying N2320 over Oak Creek in Washita County, Oklahoma. It was built in 1950 and reconstructed in 2003, so it is 75 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. Its operating status is: posted for load restriction.

It carries about 25 vehicles a day, roughly 10% of them trucks, projected to reach 40 by 2042. The structure is 44 ft (13.4 m) long and 16 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesN2320
CrossesOak Creek
Location2.3S 1.E of Lake Valle
RouteCounty Highway N2320
CountyWashita County
StateOklahoma
Coordinates35.14197, -98.84586
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating22 US tons
Inventory rating13 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckWood or timber
Main spans2
Design loadUnknown
Structure length44 ft (13.4 m)
Longest span35 ft (10.7 m)
Deck width16 ft (4.9 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2022)
Projected traffic40 by 2042
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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$327,000
NavigationNo navigation control on waterway

Frequently asked questions

When was N2320 over Oak Creek built?

It was built in 1950, making it 75 years old in 2025. It was reconstructed in 2003.

What condition is N2320 over Oak 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 N2320 over Oak Creek carry?

About 25 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is N2320 over Oak Creek?

The structure is 44 ft (13.4 m) long with a longest span of 35 ft (10.7 m) and a deck 16 ft wide.

Who owns N2320 over Oak Creek?

It is owned by the County Highway Agency.