US Bridges

N121 over Dry Creek

Fair

Pierce County, Nebraska · 7S Osmond · Structure no. S121 02858

Built
1969
56 years old, rebuilt 2014
Condition
Fair
inspected October 2024
Type
Slab
Concrete Continuous
Length
80 ft
3 main spans
Daily traffic
1,080
2018 count
Owner
State
State Highway Agency

About this bridge

N121 over Dry Creek is a concrete continuous slab carrying N121 over Dry Creek in Pierce County, Nebraska. It was built in 1969 and reconstructed in 2014, so it is 56 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 1,080 vehicles a day, roughly 9% of them trucks, projected to reach 1,836 by 2038. The structure is 80 ft (24.4 m) long and 43 ft wide. If it were closed, the detour would be 149.1 mi (240 km).

Location

Open in Google Maps
CarriesN121
CrossesDry Creek
Location7S Osmond
RouteState Highway 121
CountyPierce County
StateNebraska
Coordinates42.2441, -97.6012
Functional classRural Major Collector

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 protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.6 US tons
Inventory rating29.8 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length80 ft (24.4 m)
Longest span32 ft (9.8 m)
Deck width43 ft (13.1 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 Dry Creek built?

It was built in 1969, making it 56 years old in 2025. It was reconstructed in 2014.

What condition is N121 over Dry 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 October 2024.

How much traffic does N121 over Dry Creek carry?

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

How long is N121 over Dry Creek?

The structure is 80 ft (24.4 m) long with a longest span of 32 ft (9.8 m) and a deck 43 ft wide.

Who owns N121 over Dry Creek?

It is owned by the State Highway Agency.