US Bridges

N4 over Stream

Good

Nuckolls County, Nebraska · 11.5W Davenport · Structure no. S004 08647

Built
1991
34 years old
Condition
Good
inspected July 2023
Type
Culvert
Concrete
Length
32 ft
3 main spans
Daily traffic
425
2018 count
Owner
State
State Highway Agency

About this bridge

N4 over Stream is a concrete culvert carrying N4 over Stream in Nuckolls County, Nebraska. It was built in 1991, so it is 34 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 425 vehicles a day, roughly 18% of them trucks, projected to reach 616 by 2038. The structure is 32 ft (9.8 m) long. If it were closed, the detour would be 49.7 mi (80 km).

CarriesN4
CrossesStream
Location11.5W Davenport
RouteState Highway 4
Coordinates40.3075, -98.0312
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 protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.4 US tons
Inventory rating36.4 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length32 ft (9.8 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic425 (2018)
Projected traffic616 by 2038
Trucks18%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed49.7 mi (80 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 N4 over Stream built?

It was built in 1991, making it 34 years old in 2025.

What condition is N4 over Stream 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 July 2023.

How much traffic does N4 over Stream carry?

About 425 vehicles per day (2018 count), of which roughly 18% are trucks.

How long is N4 over Stream?

The structure is 32 ft (9.8 m) long with a longest span of 10 ft (3 m).

Who owns N4 over Stream?

It is owned by the State Highway Agency.