US Bridges

N4136 (s. Maple) over Sewer Creek

FairPosted for load

Nowata County, Oklahoma · 348 S Maple · Structure no. 055330000000000

Built
1938
87 years old
Condition
Fair
inspected May 2024
Type
Slab
Concrete
Length
24 ft
2 main spans
Daily traffic
401
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

N4136 (s. Maple) over Sewer Creek is a concrete slab carrying N4136 (s. Maple) over Sewer Creek in Nowata County, Oklahoma. It was built in 1938, so it is 87 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 401 vehicles a day, roughly 5% of them trucks, projected to reach 642 by 2042. The structure is 24 ft (7.3 m) long and 24 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesN4136 (s. Maple)
CrossesSewer Creek
Location348 S Maple
RouteCity Street N4136
Coordinates36.69454, -95.63844
Functional classUrban 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating26.3 US tons
Inventory rating15.8 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length24 ft (7.3 m)
Longest span10 ft (3 m)
Deck width24 ft (7.3 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic401 (2022)
Projected traffic642 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$236,000
NavigationNo navigation control on waterway

Frequently asked questions

When was N4136 (s. Maple) over Sewer Creek built?

It was built in 1938, making it 87 years old in 2025.

What condition is N4136 (s. Maple) over Sewer 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 2024.

How much traffic does N4136 (s. Maple) over Sewer Creek carry?

About 401 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is N4136 (s. Maple) over Sewer Creek?

The structure is 24 ft (7.3 m) long with a longest span of 10 ft (3 m) and a deck 24 ft wide.

Who owns N4136 (s. Maple) over Sewer Creek?

It is owned by the City or Municipal Highway Agency and maintained by the County Highway Agency.