US Bridges

US20 over Stream

Good

Dawes County, Nebraska · 1E Chadron · Structure no. S020 06119

Built
1952
73 years old, rebuilt 1992
Condition
Good
inspected May 2024
Type
Culvert
Concrete
Length
21 ft
2 main spans
Daily traffic
2,425
2018 count
Owner
State
State Highway Agency

About this bridge

US20 over Stream is a concrete culvert carrying US20 over Stream in Dawes County, Nebraska. It was built in 1952 and reconstructed in 1992, so it is 73 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 2,425 vehicles a day, roughly 9% of them trucks, projected to reach 3,153 by 2038. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 31.1 mi (50 km).

CarriesUS20
CrossesStream
Location1E Chadron
RouteU.S. Route 20
Coordinates42.8284, -102.9678
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 inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 spans2
Design loadUnknown
Structure length21 ft (6.4 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 traffic2,425 (2018)
Projected traffic3,153 by 2038
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed31.1 mi (50 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 Stream built?

It was built in 1952, making it 73 years old in 2025. It was reconstructed in 1992.

What condition is US20 over Stream 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 May 2024.

How much traffic does US20 over Stream carry?

About 2,425 vehicles per day (2018 count), of which roughly 9% are trucks.

How long is US20 over Stream?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m).

Who owns US20 over Stream?

It is owned by the State Highway Agency.