US Bridges

US20 over Overflow Elkhorn River

Good

Holt County, Nebraska · 6SE Inman · Structure no. S020 32238

Built
2000
25 years old
Condition
Good
inspected March 2021
Type
Culvert
Concrete
Length
41 ft
4 main spans
Daily traffic
820
2018 count
Owner
State
State Highway Agency

About this bridge

US20 over Overflow Elkhorn River is a concrete culvert carrying US20 over Overflow Elkhorn River in Holt County, Nebraska. It was built in 2000, so it is 25 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 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 820 vehicles a day, roughly 26% of them trucks, projected to reach 1,107 by 2038. The structure is 41 ft (12.5 m) long. If it were closed, the detour would be 18.6 mi (30 km).

CarriesUS20
CrossesOverflow Elkhorn River
Location6SE Inman
RouteU.S. Route 20
Coordinates42.3355, -98.4261
Functional classRural Principal Arterial - Other

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 inspectionMarch 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable 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 spans4
Design loadHS 20
Structure length41 ft (12.5 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 traffic820 (2018)
Projected traffic1,107 by 2038
Trucks26%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed18.6 mi (30 km)
TollOn a free road
National Highway SystemYes

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 US20 over Overflow Elkhorn River built?

It was built in 2000, making it 25 years old in 2025.

What condition is US20 over Overflow Elkhorn River 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 March 2021.

How much traffic does US20 over Overflow Elkhorn River carry?

About 820 vehicles per day (2018 count), of which roughly 26% are trucks.

How long is US20 over Overflow Elkhorn River?

The structure is 41 ft (12.5 m) long with a longest span of 10 ft (3 m).

Who owns US20 over Overflow Elkhorn River?

It is owned by the State Highway Agency.