US Bridges

N11 over Elkhorn River

Good

Holt County, Nebraska · 1S Atkinson · Structure no. S011 14761

Built
1953
72 years old, rebuilt 1990
Condition
Good
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
215 ft
3 main spans
Daily traffic
640
2018 count
Owner
State
State Highway Agency

About this bridge

N11 over Elkhorn River is a steel continuous stringer/multi-beam or girder carrying N11 over Elkhorn River in Holt County, Nebraska. It was built in 1953 and reconstructed in 1990, so it is 72 years old, older than the Nebraska average of 47.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 640 vehicles a day, roughly 9% of them trucks, projected to reach 768 by 2038. The structure is 215 ft (65.5 m) long and 38 ft wide. If it were closed, the detour would be 37.3 mi (60 km).

CarriesN11
CrossesElkhorn River
Location1S Atkinson
RouteState Highway 11
Coordinates42.5179, -98.9714
Functional classRural Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.9 US tons
Inventory rating38.6 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length215 ft (65.5 m)
Longest span100 ft (30.5 m)
Deck width38 ft (11.7 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic640 (2018)
Projected traffic768 by 2038
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed37.3 mi (60 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 N11 over Elkhorn River built?

It was built in 1953, making it 72 years old in 2025. It was reconstructed in 1990.

What condition is N11 over Elkhorn River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in March 2023.

How much traffic does N11 over Elkhorn River carry?

About 640 vehicles per day (2018 count), of which roughly 9% are trucks.

How long is N11 over Elkhorn River?

The structure is 215 ft (65.5 m) long with a longest span of 100 ft (30.5 m) and a deck 38 ft wide.

Who owns N11 over Elkhorn River?

It is owned by the State Highway Agency.