US Bridges

N121 over N Fk Elkhorn River

Good

Pierce County, Nebraska · 3S Osmond · Structure no. S121 03271

Built
2014
11 years old
Condition
Good
inspected October 2024
Type
Slab
Concrete Continuous
Length
110 ft
3 main spans
Daily traffic
1,080
2018 count
Owner
State
State Highway Agency

About this bridge

N121 over N Fk Elkhorn River is a concrete continuous slab carrying N121 over N Fk Elkhorn River in Pierce County, Nebraska. It was built in 2014, so it is 11 years old, younger 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,080 vehicles a day, roughly 9% of them trucks, projected to reach 1,836 by 2038. The structure is 110 ft (33.5 m) long and 43 ft wide. If it were closed, the detour would be 149.1 mi (240 km).

CarriesN121
CrossesN Fk Elkhorn River
Location3S Osmond
RouteState Highway 121
Coordinates42.3009, -97.6012
Functional classRural Major Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than 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 rating78.3 US tons
Inventory rating46.3 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length110 ft (33.5 m)
Longest span38 ft (11.6 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,080 (2018)
Projected traffic1,836 by 2038
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed149.1 mi (240 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 N121 over N Fk Elkhorn River built?

It was built in 2014, making it 11 years old in 2025.

What condition is N121 over N Fk 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 October 2024.

How much traffic does N121 over N Fk Elkhorn River carry?

About 1,080 vehicles per day (2018 count), of which roughly 9% are trucks.

How long is N121 over N Fk Elkhorn River?

The structure is 110 ft (33.5 m) long with a longest span of 38 ft (11.6 m) and a deck 43 ft wide.

Who owns N121 over N Fk Elkhorn River?

It is owned by the State Highway Agency.