US Bridges

N15 over Cub Creek

Good

Jefferson County, Nebraska · 8N Fairbury · Structure no. S015 01772

Built
2020
5 years old
Condition
Good
inspected August 2024
Type
Culvert
Concrete
Length
25 ft
3 main spans
Daily traffic
2,120
2018 count
Owner
State
State Highway Agency

About this bridge

N15 over Cub Creek is a concrete culvert carrying N15 over Cub Creek in Jefferson County, Nebraska. It was built in 2020, so it is 5 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,120 vehicles a day, roughly 18% of them trucks, projected to reach 2,756 by 2038. The structure is 25 ft (7.7 m) long. If it were closed, the detour would be 37.3 mi (60 km).

CarriesN15
CrossesCub Creek
Location8N Fairbury
RouteState Highway 15
Coordinates40.257, -97.18
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
Channel and channel protection7 GoodSome minor problems.
Culvert8 Very GoodNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHL 93
Structure length25 ft (7.7 m)
Longest span8 ft (2.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,120 (2018)
Projected traffic2,756 by 2038
Trucks18%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed37.3 mi (60 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 N15 over Cub Creek built?

It was built in 2020, making it 5 years old in 2025.

What condition is N15 over Cub 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 August 2024.

How much traffic does N15 over Cub Creek carry?

About 2,120 vehicles per day (2018 count), of which roughly 18% are trucks.

How long is N15 over Cub Creek?

The structure is 25 ft (7.7 m) long with a longest span of 8 ft (2.4 m).

Who owns N15 over Cub Creek?

It is owned by the State Highway Agency.