US Bridges

N15 over Stream

Fair

Cedar County, Nebraska · 10N Laurel · Structure no. S015 19035

Built
1977
48 years old
Condition
Fair
inspected September 2024
Type
Culvert
Concrete
Length
48 ft
4 main spans
Daily traffic
665
2018 count
Owner
State
State Highway Agency

About this bridge

N15 over Stream is a concrete culvert carrying N15 over Stream in Cedar County, Nebraska. It was built in 1977, so it is 48 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 665 vehicles a day, roughly 13% of them trucks, projected to reach 865 by 2038. The structure is 48 ft (14.6 m) long. If it were closed, the detour would be 31.1 mi (50 km).

Location

Open in Google Maps
CarriesN15
CrossesStream
Location10N Laurel
RouteState Highway 15
CountyCedar County
StateNebraska
Coordinates42.5748, -97.0939
Functional classRural Major Collector

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 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
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 spans4
Design loadHS 20
Structure length48 ft (14.6 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 traffic665 (2018)
Projected traffic865 by 2038
Trucks13%
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 N15 over Stream built?

It was built in 1977, making it 48 years old in 2025.

What condition is N15 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 September 2024.

How much traffic does N15 over Stream carry?

About 665 vehicles per day (2018 count), of which roughly 13% are trucks.

How long is N15 over Stream?

The structure is 48 ft (14.6 m) long with a longest span of 10 ft (3 m).

Who owns N15 over Stream?

It is owned by the State Highway Agency.