US Bridges

N40 over Stream

Good

Buffalo County, Nebraska · 1SE Riverdale · Structure no. S040 08284

Built
1992
33 years old
Condition
Good
inspected August 2021
Type
Culvert
Concrete
Length
37 ft
3 main spans
Daily traffic
3,365
2018 count
Owner
State
State Highway Agency

About this bridge

N40 over Stream is a concrete culvert carrying N40 over Stream in Buffalo County, Nebraska. It was built in 1992, so it is 33 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 3,365 vehicles a day, roughly 4% of them trucks, projected to reach 5,216 by 2038. The structure is 37 ft (11.3 m) long. If it were closed, the detour would be 31.1 mi (50 km).

Location

Open in Google Maps
CarriesN40
CrossesStream
Location1SE Riverdale
RouteState Highway 40
CountyBuffalo County
StateNebraska
Coordinates40.7732, -99.14
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 inspectionAugust 2021
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 length37 ft (11.3 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 traffic3,365 (2018)
Projected traffic5,216 by 2038
Trucks4%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was N40 over Stream built?

It was built in 1992, making it 33 years old in 2025.

What condition is N40 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 August 2021.

How much traffic does N40 over Stream carry?

About 3,365 vehicles per day (2018 count), of which roughly 4% are trucks.

How long is N40 over Stream?

The structure is 37 ft (11.3 m) long with a longest span of 12 ft (3.7 m).

Who owns N40 over Stream?

It is owned by the State Highway Agency.