US Bridges

N15 over Elkhorn River

Fair

Stanton County, Nebraska · 1S Pilger · Structure no. S015 14603

Built
1993
32 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
352 ft
5 main spans
Daily traffic
1,970
2018 count
Owner
State
State Highway Agency

About this bridge

N15 over Elkhorn River is a prestressed concrete stringer/multi-beam or girder carrying N15 over Elkhorn River in Stanton County, Nebraska. It was built in 1993, so it is 32 years old, younger 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 1,970 vehicles a day, roughly 18% of them trucks, projected to reach 2,955 by 2038. The structure is 352 ft (107.3 m) long and 42 ft wide. If it were closed, the detour would be 161.6 mi (260 km).

Location

Open in Google Maps
CarriesN15
CrossesElkhorn River
Location1S Pilger
RouteState Highway 15
CountyStanton County
StateNebraska
Coordinates41.9956, -97.0589
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating76.1 US tons
Inventory rating45.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 25 or greater
Structure length352 ft (107.3 m)
Longest span70 ft (21.3 m)
Deck width42 ft (12.9 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,970 (2018)
Projected traffic2,955 by 2038
Trucks18%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed161.6 mi (260 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was N15 over Elkhorn River built?

It was built in 1993, making it 32 years old in 2025.

What condition is N15 over Elkhorn River 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 June 2023.

How much traffic does N15 over Elkhorn River carry?

About 1,970 vehicles per day (2018 count), of which roughly 18% are trucks.

How long is N15 over Elkhorn River?

The structure is 352 ft (107.3 m) long with a longest span of 70 ft (21.3 m) and a deck 42 ft wide.

Who owns N15 over Elkhorn River?

It is owned by the State Highway Agency.