US Bridges

N40 over Sand Creek

Good

Custer County, Nebraska · 6W Callaway · Structure no. S040 02013

Built
1965
60 years old, rebuilt 1994
Condition
Good
inspected November 2024
Type
Culvert
Concrete
Length
44 ft
4 main spans
Daily traffic
305
2018 count
Owner
State
State Highway Agency

About this bridge

N40 over Sand Creek is a concrete culvert carrying N40 over Sand Creek in Custer County, Nebraska. It was built in 1965 and reconstructed in 1994, so it is 60 years old, older 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 305 vehicles a day, roughly 18% of them trucks, projected to reach 412 by 2038. The structure is 44 ft (13.4 m) long. If it were closed, the detour would be 37.3 mi (60 km).

CarriesN40
CrossesSand Creek
Location6W Callaway
RouteState Highway 40
Coordinates41.2777, -100.0298
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.
Culvert8 Very GoodNo problems noted.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
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 spans4
Design loadHS 20
Structure length44 ft (13.4 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 traffic305 (2018)
Projected traffic412 by 2038
Trucks18%
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 N40 over Sand Creek built?

It was built in 1965, making it 60 years old in 2025. It was reconstructed in 1994.

What condition is N40 over Sand Creek 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 November 2024.

How much traffic does N40 over Sand Creek carry?

About 305 vehicles per day (2018 count), of which roughly 18% are trucks.

How long is N40 over Sand Creek?

The structure is 44 ft (13.4 m) long with a longest span of 10 ft (3 m).

Who owns N40 over Sand Creek?

It is owned by the State Highway Agency.