US Bridges

N121 over Stream

Fair

Pierce County, Nebraska · 1S Osmond · Structure no. S121 03473

Built
1947
78 years old, rebuilt 1968
Condition
Fair
inspected October 2024
Type
Culvert
Concrete
Length
37 ft
3 main spans
Daily traffic
1,080
2018 count
Owner
State
State Highway Agency

About this bridge

N121 over Stream is a concrete culvert carrying N121 over Stream in Pierce County, Nebraska. It was built in 1947 and reconstructed in 1968, so it is 78 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 37 ft (11.3 m) long. If it were closed, the detour would be 149.1 mi (240 km).

Location

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CarriesN121
CrossesStream
Location1S Osmond
RouteState Highway 121
CountyPierce County
StateNebraska
Coordinates42.3301, -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
Channel and channel protection8 Very GoodNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36.4 US tons
Inventory rating24.3 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length37 ft (11.3 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was N121 over Stream built?

It was built in 1947, making it 78 years old in 2025. It was reconstructed in 1968.

What condition is N121 over Stream 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 Stream carry?

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

How long is N121 over Stream?

The structure is 37 ft (11.3 m) long with a longest span of 12 ft (3.7 m).

Who owns N121 over Stream?

It is owned by the State Highway Agency.