US Bridges

N4 over Stream

Fair

Pawnee County, Nebraska · 1W Lewiston · Structure no. S004 17505

Built
1961
64 years old, rebuilt 1990
Condition
Fair
inspected June 2024
Type
Culvert
Concrete
Length
27 ft
2 main spans
Daily traffic
755
2018 count
Owner
State
State Highway Agency

About this bridge

N4 over Stream is a concrete culvert carrying N4 over Stream in Pawnee County, Nebraska. It was built in 1961 and reconstructed in 1990, 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 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 755 vehicles a day, roughly 15% of them trucks, projected to reach 1,095 by 2038. The structure is 27 ft (8.2 m) long. If it were closed, the detour would be 37.3 mi (60 km).

Location

Open in Google Maps
CarriesN4
CrossesStream
Location1W Lewiston
RouteState Highway 4
CountyPawnee County
StateNebraska
Coordinates40.248, -96.4243
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 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 spans2
Design loadUnknown
Structure length27 ft (8.2 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 traffic755 (2018)
Projected traffic1,095 by 2038
Trucks15%
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 N4 over Stream built?

It was built in 1961, making it 64 years old in 2025. It was reconstructed in 1990.

What condition is N4 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 June 2024.

How much traffic does N4 over Stream carry?

About 755 vehicles per day (2018 count), of which roughly 15% are trucks.

How long is N4 over Stream?

The structure is 27 ft (8.2 m) long with a longest span of 12 ft (3.7 m).

Who owns N4 over Stream?

It is owned by the State Highway Agency.