US Bridges

County Highway over Niobrara River

Fair

Cherry County, Nebraska · 8E 4.5S of Merriman · Structure no. C001605505P

Built
1988
37 years old
Condition
Fair
inspected January 2025
Type
Tee Beam
Prestressed Concrete
Length
231 ft
4 main spans
Daily traffic
10
2003 count
Owner
County
County Highway Agency

About this bridge

County Highway over Niobrara River is a prestressed concrete tee beam carrying County Highway over Niobrara River in Cherry County, Nebraska. It was built in 1988, so it is 37 years old, younger 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 6 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 10 vehicles a day, roughly 15% of them trucks, projected to reach 17 by 2033. The structure is 231 ft (70.4 m) long and 30 ft wide. If it were closed, the detour would be 329.3 mi (530 km).

CarriesCounty Highway
CrossesNiobrara River
Location8E 4.5S of Merriman
RouteCounty Highway 0P55
Coordinates42.8517, -101.5283
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66.1 US tons
Inventory rating37.5 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length231 ft (70.4 m)
Longest span58 ft (17.7 m)
Deck width30 ft (9.2 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2003)
Projected traffic17 by 2033
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed329.3 mi (530 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 County Highway over Niobrara River built?

It was built in 1988, making it 37 years old in 2025.

What condition is County Highway over Niobrara River 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 January 2025.

How much traffic does County Highway over Niobrara River carry?

About 10 vehicles per day (2003 count), of which roughly 15% are trucks.

How long is County Highway over Niobrara River?

The structure is 231 ft (70.4 m) long with a longest span of 58 ft (17.7 m) and a deck 30 ft wide.

Who owns County Highway over Niobrara River?

It is owned by the County Highway Agency.