US Bridges

County RD 400th Av over Drainage Ditch

Good

Nance County, Nebraska · 2N of Genoa · Structure no. C006326105

Built
2009
16 years old
Condition
Good
inspected November 2022
Type
Culvert
Concrete
Length
24 ft
3 main spans
Daily traffic
80
2003 count
Owner
County
County Highway Agency

About this bridge

County RD 400th Av over Drainage Ditch is a concrete culvert carrying County RD 400th Av over Drainage Ditch in Nance County, Nebraska. It was built in 2009, so it is 16 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 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 80 vehicles a day, projected to reach 136 by 2041. The structure is 24 ft (7.3 m) long. If it were closed, the detour would be 49.7 mi (80 km).

Location

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CarriesCounty RD 400th Av
CrossesDrainage Ditch
Location2N of Genoa
RouteCounty Highway 261
CountyNance County
StateNebraska
Coordinates41.4833, -97.715
Functional classRural Local

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 protection9 ExcellentNo problems noted.
Culvert9 ExcellentNo problems noted.
Last inspectionNovember 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.3 US tons
Inventory rating36.4 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length24 ft (7.3 m)
Longest span8 ft (2.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic80 (2003)
Projected traffic136 by 2041
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed49.7 mi (80 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was County RD 400th Av over Drainage Ditch built?

It was built in 2009, making it 16 years old in 2025.

What condition is County RD 400th Av over Drainage Ditch 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 2022.

How much traffic does County RD 400th Av over Drainage Ditch carry?

About 80 vehicles per day (2003 count).

How long is County RD 400th Av over Drainage Ditch?

The structure is 24 ft (7.3 m) long with a longest span of 8 ft (2.4 m).

Who owns County RD 400th Av over Drainage Ditch?

It is owned by the County Highway Agency.