US Bridges

N3540 over Lagoon Creek

Fair

Pawnee County, Oklahoma · .7S .8W 2.2S of Maramec · Structure no. 199090000000000

Built
1981
44 years old
Condition
Fair
inspected July 2023
Type
Culvert
Concrete
Length
45 ft
3 main spans
Daily traffic
119
2022 count
Owner
County
County Highway Agency

About this bridge

N3540 over Lagoon Creek is a concrete culvert carrying N3540 over Lagoon Creek in Pawnee County, Oklahoma. It was built in 1981, so it is 44 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.

It carries about 119 vehicles a day, roughly 15% of them trucks, projected to reach 190 by 2042. The structure is 45 ft (13.7 m) long. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesN3540
CrossesLagoon Creek
Location.7S .8W 2.2S of Maramec
RouteCounty Highway N3540
CountyPawnee County
StateOklahoma
Coordinates36.20303, -96.69553
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 inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating60.2 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length45 ft (13.7 m)
Longest span17 ft (5.2 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic119 (2022)
Projected traffic190 by 2042
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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$225,000
NavigationNo navigation control on waterway

Frequently asked questions

When was N3540 over Lagoon Creek built?

It was built in 1981, making it 44 years old in 2025.

What condition is N3540 over Lagoon 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 2023.

How much traffic does N3540 over Lagoon Creek carry?

About 119 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is N3540 over Lagoon Creek?

The structure is 45 ft (13.7 m) long with a longest span of 17 ft (5.2 m).

Who owns N3540 over Lagoon Creek?

It is owned by the County Highway Agency.