US Bridges

N50 over N Fk Little Nemaha River

Fair

Otoe County, Nebraska · 6N Syracuse · Structure no. S050 05900

Built
1958
67 years old, rebuilt 2009
Condition
Fair
inspected February 2025
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
86 ft
1 main span
Daily traffic
3,485
2018 count
Owner
State
State Highway Agency

About this bridge

N50 over N Fk Little Nemaha River is a prestressed concrete stringer/multi-beam or girder carrying N50 over N Fk Little Nemaha River in Otoe County, Nebraska. It was built in 1958 and reconstructed in 2009, so it is 67 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 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 3,485 vehicles a day, roughly 23% of them trucks, projected to reach 5,053 by 2038. The structure is 86 ft (26.2 m) long and 32 ft wide. If it were closed, the detour would be 31.1 mi (50 km).

CarriesN50
CrossesN Fk Little Nemaha River
Location6N Syracuse
RouteState Highway 50
Coordinates40.7557, -96.1784
Functional classRural Minor Arterial

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 protection7 GoodSome minor problems.
Last inspectionFebruary 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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating94.8 US tons
Inventory rating57.3 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length86 ft (26.2 m)
Longest span85 ft (25.9 m)
Deck width32 ft (9.9 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,485 (2018)
Projected traffic5,053 by 2038
Trucks23%
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

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 N50 over N Fk Little Nemaha River built?

It was built in 1958, making it 67 years old in 2025. It was reconstructed in 2009.

What condition is N50 over N Fk Little Nemaha 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 February 2025.

How much traffic does N50 over N Fk Little Nemaha River carry?

About 3,485 vehicles per day (2018 count), of which roughly 23% are trucks.

How long is N50 over N Fk Little Nemaha River?

The structure is 86 ft (26.2 m) long with a longest span of 85 ft (25.9 m) and a deck 32 ft wide.

Who owns N50 over N Fk Little Nemaha River?

It is owned by the State Highway Agency.