US Bridges

N50 over N Ch Platte River

Fair

Cass County, Nebraska · 1N Louisville · Structure no. S050 07712

Built
1973
52 years old, rebuilt 2015
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
1,419 ft
12 main spans
Daily traffic
7,900
2018 count
Owner
State
State Highway Agency

About this bridge

N50 over N Ch Platte River is a steel continuous stringer/multi-beam or girder carrying N50 over N Ch Platte River in Cass County, Nebraska. It was built in 1973 and reconstructed in 2015, so it is 52 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 7,900 vehicles a day, roughly 16% of them trucks, projected to reach 12,640 by 2038. The structure is 1,419 ft (432.5 m) long and 52 ft wide. If it were closed, the detour would be 248.5 mi (400 km).

CarriesN50
CrossesN Ch Platte River
Location1N Louisville
RouteState Highway 50
Coordinates41.0131, -96.1577
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65 US tons
Inventory rating38.6 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans12
Design loadUnknown
Structure length1,419 ft (432.5 m)
Longest span118 ft (36 m)
Deck width52 ft (15.9 m)
Roadway width50 ft (15.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,900 (2018)
Projected traffic12,640 by 2038
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed248.5 mi (400 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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was N50 over N Ch Platte River built?

It was built in 1973, making it 52 years old in 2025. It was reconstructed in 2015.

What condition is N50 over N Ch Platte 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 March 2024.

How much traffic does N50 over N Ch Platte River carry?

About 7,900 vehicles per day (2018 count), of which roughly 16% are trucks.

How long is N50 over N Ch Platte River?

The structure is 1,419 ft (432.5 m) long with a longest span of 118 ft (36 m) and a deck 52 ft wide.

Who owns N50 over N Ch Platte River?

It is owned by the State Highway Agency.