US Bridges

Field Entrance over Warm Slough Overflow

Good

Merrick County, Nebraska · JCT US30/N14 1.8S .5W · Structure no. C006102905P

Built
1992
33 years old
Condition
Good
inspected October 2023
Type
Culvert
Concrete
Length
44 ft
4 main spans
Daily traffic
10
2003 count
Owner
County
County Highway Agency

About this bridge

Field Entrance over Warm Slough Overflow is a concrete culvert carrying Field Entrance over Warm Slough Overflow in Merrick 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 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 10 vehicles a day, projected to reach 14 by 2033. The structure is 44 ft (13.4 m) long. If it were closed, the detour would be 12.4 mi (20 km).

Location

Open in Google Maps
CarriesField Entrance
CrossesWarm Slough Overflow
LocationJCT US30/N14 1.8S .5W
RouteCounty Highway 29P
CountyMerrick County
StateNebraska
Coordinates41.0905, -98.0102
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 inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment9: Superior 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 traffic10 (2003)
Projected traffic14 by 2033
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed12.4 mi (20 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Field Entrance over Warm Slough Overflow built?

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

What condition is Field Entrance over Warm Slough Overflow 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 October 2023.

How much traffic does Field Entrance over Warm Slough Overflow carry?

About 10 vehicles per day (2003 count).

How long is Field Entrance over Warm Slough Overflow?

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

Who owns Field Entrance over Warm Slough Overflow?

It is owned by the County Highway Agency.