US Bridges

N15 over Crooked Creek

Fair

Seward County, Nebraska · 5S Seward · Structure no. S015 06155

Built
1939
86 years old, rebuilt 2017
Condition
Fair
inspected January 2025
Type
Slab
Concrete Continuous
Length
101 ft
3 main spans
Daily traffic
5,810
2018 count
Owner
State
State Highway Agency

About this bridge

N15 over Crooked Creek is a concrete continuous slab carrying N15 over Crooked Creek in Seward County, Nebraska. It was built in 1939 and reconstructed in 2017, so it is 86 years old, older than the Nebraska average of 47.1 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 5,810 vehicles a day, roughly 10% of them trucks, projected to reach 5,810 by 2038. The structure is 101 ft (30.8 m) long and 34 ft wide. If it were closed, the detour would be 18.6 mi (30 km).

Location

Open in Google Maps
CarriesN15
CrossesCrooked Creek
Location5S Seward
RouteState Highway 15
CountySeward County
StateNebraska
Coordinates40.8363, -97.1019
Functional classRural Minor Arterial

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.3 US tons
Inventory rating27.6 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length101 ft (30.8 m)
Longest span38 ft (11.6 m)
Deck width34 ft (10.3 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,810 (2018)
Projected traffic5,810 by 2038
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed18.6 mi (30 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was N15 over Crooked Creek built?

It was built in 1939, making it 86 years old in 2025. It was reconstructed in 2017.

What condition is N15 over Crooked 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 2025.

How much traffic does N15 over Crooked Creek carry?

About 5,810 vehicles per day (2018 count), of which roughly 10% are trucks.

How long is N15 over Crooked Creek?

The structure is 101 ft (30.8 m) long with a longest span of 38 ft (11.6 m) and a deck 34 ft wide.

Who owns N15 over Crooked Creek?

It is owned by the State Highway Agency.