US Bridges

516th Road over Elkhorn River Overflow

Fair

Antelope County, Nebraska · .5N of Clearwater · Structure no. C000221315

Built
1965
60 years old
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
71 ft
1 main span
Daily traffic
255
1998 count
Owner
County
County Highway Agency

About this bridge

516th Road over Elkhorn River Overflow is a steel stringer/multi-beam or girder carrying 516th Road over Elkhorn River Overflow in Antelope County, Nebraska. It was built in 1965, 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 fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 255 vehicles a day, projected to reach 433 by 2042. The structure is 71 ft (21.6 m) long and 25 ft wide. If it were closed, the detour would be 31.1 mi (50 km).

Location

Open in Google Maps
Carries516th Road
CrossesElkhorn River Overflow
Location.5N of Clearwater
RouteCounty Highway 7651
CountyAntelope County
StateNebraska
Coordinates42.181, -98.184
Functional classRural Minor Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.7 US tons
Inventory rating23.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 15
Structure length71 ft (21.6 m)
Longest span70 ft (21.3 m)
Deck width25 ft (7.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic255 (1998)
Projected traffic433 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed31.1 mi (50 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 516th Road over Elkhorn River Overflow built?

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

What condition is 516th Road over Elkhorn River Overflow in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in November 2024.

How much traffic does 516th Road over Elkhorn River Overflow carry?

About 255 vehicles per day (1998 count).

How long is 516th Road over Elkhorn River Overflow?

The structure is 71 ft (21.6 m) long with a longest span of 70 ft (21.3 m) and a deck 25 ft wide.

Who owns 516th Road over Elkhorn River Overflow?

It is owned by the County Highway Agency.