US Bridges

N12 over West Bow Creek

Good

Cedar County, Nebraska · 3SW Wynot · Structure no. S012 20366

Built
2018
7 years old
Condition
Good
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
160 ft
3 main spans
Daily traffic
1,170
2018 count
Owner
State
State Highway Agency

About this bridge

N12 over West Bow Creek is a prestressed concrete stringer/multi-beam or girder carrying N12 over West Bow Creek in Cedar County, Nebraska. It was built in 2018, so it is 7 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 1,170 vehicles a day, roughly 15% of them trucks, projected to reach 1,755 by 2038. The structure is 160 ft (48.8 m) long and 39 ft wide. If it were closed, the detour would be 31.1 mi (50 km).

CarriesN12
CrossesWest Bow Creek
Location3SW Wynot
RouteState Highway 12
Coordinates42.73, -97.219
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
Deck7 GoodSome minor problems.
Superstructure9 ExcellentNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.3 US tons
Inventory rating44.1 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length160 ft (48.8 m)
Longest span64 ft (19.5 m)
Deck width39 ft (11.8 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,170 (2018)
Projected traffic1,755 by 2038
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed31.1 mi (50 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 N12 over West Bow Creek built?

It was built in 2018, making it 7 years old in 2025.

What condition is N12 over West Bow Creek 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 September 2024.

How much traffic does N12 over West Bow Creek carry?

About 1,170 vehicles per day (2018 count), of which roughly 15% are trucks.

How long is N12 over West Bow Creek?

The structure is 160 ft (48.8 m) long with a longest span of 64 ft (19.5 m) and a deck 39 ft wide.

Who owns N12 over West Bow Creek?

It is owned by the State Highway Agency.