US Bridges

N40 over Stream

Fair

Buffalo County, Nebraska · 3NW Amherst · Structure no. S040 07244

Built
1935
90 years old, rebuilt 1962
Condition
Fair
inspected August 2023
Type
Slab
Concrete
Length
50 ft
3 main spans
Daily traffic
1,135
2018 count
Owner
State
State Highway Agency

About this bridge

N40 over Stream is a concrete slab carrying N40 over Stream in Buffalo County, Nebraska. It was built in 1935 and reconstructed in 1962, so it is 90 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 1,135 vehicles a day, roughly 4% of them trucks, projected to reach 1,589 by 2038. The structure is 50 ft (15.2 m) long and 38 ft wide. If it were closed, the detour would be 18.6 mi (30 km).

Location

Open in Google Maps
CarriesN40
CrossesStream
Location3NW Amherst
RouteState Highway 40
CountyBuffalo County
StateNebraska
Coordinates40.8613, -99.2982
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
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
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38.6 US tons
Inventory rating23.1 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length50 ft (15.2 m)
Longest span16 ft (4.9 m)
Deck width38 ft (11.6 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,135 (2018)
Projected traffic1,589 by 2038
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed18.6 mi (30 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 N40 over Stream built?

It was built in 1935, making it 90 years old in 2025. It was reconstructed in 1962.

What condition is N40 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 August 2023.

How much traffic does N40 over Stream carry?

About 1,135 vehicles per day (2018 count), of which roughly 4% are trucks.

How long is N40 over Stream?

The structure is 50 ft (15.2 m) long with a longest span of 16 ft (4.9 m) and a deck 38 ft wide.

Who owns N40 over Stream?

It is owned by the State Highway Agency.