US Bridges

N3240 (triple X) over Coon Creek

FairPosted for load

Oklahoma County, Oklahoma · .6S of NE 206th · Structure no. 213100000000000

Built
1986
39 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
152 ft
3 main spans
Daily traffic
200
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

N3240 (triple X) over Coon Creek is a prestressed concrete stringer/multi-beam or girder carrying N3240 (triple X) over Coon Creek in Oklahoma County, Oklahoma. It was built in 1986, so it is 39 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 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 200 vehicles a day, roughly 10% of them trucks, projected to reach 320 by 2042. The structure is 152 ft (46.3 m) long and 35 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesN3240 (triple X)
CrossesCoon Creek
Location.6S of NE 206th
RouteCity Street N3240
CountyOklahoma County
StateOklahoma
Coordinates35.67206, -97.23004
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.
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 inspectionMay 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43.1 US tons
Inventory rating25.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length152 ft (46.3 m)
Longest span70 ft (21.3 m)
Deck width35 ft (10.6 m)
Roadway width33 ft (10 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2022)
Projected traffic320 by 2042
Trucks10%
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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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$616,000
NavigationNo navigation control on waterway

Frequently asked questions

When was N3240 (triple X) over Coon Creek built?

It was built in 1986, making it 39 years old in 2025.

What condition is N3240 (triple X) over Coon 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 N3240 (triple X) over Coon Creek carry?

About 200 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is N3240 (triple X) over Coon Creek?

The structure is 152 ft (46.3 m) long with a longest span of 70 ft (21.3 m) and a deck 35 ft wide.

Who owns N3240 (triple X) over Coon Creek?

It is owned by the City or Municipal Highway Agency.