US Bridges

N3240 over Birds Nest Creek

FairPosted for load

Noble County, Oklahoma · 3W 2.5N of US177/SH156 · Structure no. 272930000000000

Built
2003
22 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
40 ft
1 main span
Daily traffic
24
2022 count
Owner
County
County Highway Agency

About this bridge

N3240 over Birds Nest Creek is a steel stringer/multi-beam or girder carrying N3240 over Birds Nest Creek in Noble County, Oklahoma. It was built in 2003, so it is 22 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 24 vehicles a day, roughly 10% of them trucks, projected to reach 38 by 2042. The structure is 40 ft (12.2 m) long and 24 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesN3240
CrossesBirds Nest Creek
Location3W 2.5N of US177/SH156
RouteCounty Highway N3240
Coordinates36.58776, -97.2294
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47 US tons
Inventory rating28 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length40 ft (12.2 m)
Longest span39 ft (11.9 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24 (2022)
Projected traffic38 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$403,000
NavigationNo navigation control on waterway

Frequently asked questions

When was N3240 over Birds Nest Creek built?

It was built in 2003, making it 22 years old in 2025.

What condition is N3240 over Birds Nest 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 August 2023.

How much traffic does N3240 over Birds Nest Creek carry?

About 24 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is N3240 over Birds Nest Creek?

The structure is 40 ft (12.2 m) long with a longest span of 39 ft (11.9 m) and a deck 24 ft wide.

Who owns N3240 over Birds Nest Creek?

It is owned by the County Highway Agency.