US Bridges

N12 over Stream

Fair

Knox County, Nebraska · 3E Verdel · Structure no. S012 15411

Built
1961
64 years old
Condition
Fair
inspected October 2024
Type
Slab
Concrete Continuous
Length
38 ft
3 main spans
Daily traffic
545
2018 count
Owner
State
State Highway Agency

About this bridge

N12 over Stream is a concrete continuous slab carrying N12 over Stream in Knox County, Nebraska. It was built in 1961, so it is 64 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 5 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 545 vehicles a day, roughly 11% of them trucks, projected to reach 709 by 2038. The structure is 38 ft (11.6 m) long and 41 ft wide. If it were closed, the detour would be 12.4 mi (20 km).

Location

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CarriesN12
CrossesStream
Location3E Verdel
RouteState Highway 12
CountyKnox County
StateNebraska
Coordinates42.801, -98.1338
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.7 US tons
Inventory rating24.3 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length38 ft (11.6 m)
Longest span12 ft (3.7 m)
Deck width41 ft (12.5 m)
Roadway width35 ft (10.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic545 (2018)
Projected traffic709 by 2038
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed12.4 mi (20 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 N12 over Stream built?

It was built in 1961, making it 64 years old in 2025.

What condition is N12 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 N12 over Stream carry?

About 545 vehicles per day (2018 count), of which roughly 11% are trucks.

How long is N12 over Stream?

The structure is 38 ft (11.6 m) long with a longest span of 12 ft (3.7 m) and a deck 41 ft wide.

Who owns N12 over Stream?

It is owned by the State Highway Agency.