US Bridges

County Highway over Little Nemaha River

Good

Otoe County, Nebraska · 1.5E .8S Unadilla · Structure no. C006602530

Built
2012
13 years old
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
252 ft
3 main spans
Daily traffic
30
2003 count
Owner
County
County Highway Agency

About this bridge

County Highway over Little Nemaha River is a steel continuous stringer/multi-beam or girder carrying County Highway over Little Nemaha River in Otoe County, Nebraska. It was built in 2012, so it is 13 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 30 vehicles a day, projected to reach 51 by 2033. The structure is 252 ft (76.8 m) long and 31 ft wide. If it were closed, the detour would be 37.3 mi (60 km).

CarriesCounty Highway
CrossesLittle Nemaha River
Location1.5E .8S Unadilla
RouteCounty Highway 25
Coordinates40.6667, -96.2367
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than 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 rating78.3 US tons
Inventory rating46.3 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length252 ft (76.8 m)
Longest span100 ft (30.5 m)
Deck width31 ft (9.3 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2003)
Projected traffic51 by 2033
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed37.3 mi (60 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 County Highway over Little Nemaha River built?

It was built in 2012, making it 13 years old in 2025.

What condition is County Highway over Little Nemaha 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 October 2023.

How much traffic does County Highway over Little Nemaha River carry?

About 30 vehicles per day (2003 count).

How long is County Highway over Little Nemaha River?

The structure is 252 ft (76.8 m) long with a longest span of 100 ft (30.5 m) and a deck 31 ft wide.

Who owns County Highway over Little Nemaha River?

It is owned by the County Highway Agency.