US Bridges

L51A Brule Cnlk over South Platte River

Good

Keith County, Nebraska · 1S Brule · Structure no. SL51A00068

Built
1934
91 years old, rebuilt 1976
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
700 ft
11 main spans
Daily traffic
1,235
2018 count
Owner
State
State Highway Agency

About this bridge

L51A Brule Cnlk over South Platte River is a steel continuous stringer/multi-beam or girder carrying L51A Brule Cnlk over South Platte River in Keith County, Nebraska. It was built in 1934 and reconstructed in 1976, so it is 91 years old, older 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 1,235 vehicles a day, roughly 9% of them trucks, projected to reach 1,667 by 2038. The structure is 700 ft (213.4 m) long and 39 ft wide. If it were closed, the detour would be 111.8 mi (180 km).

CarriesL51A Brule Cnlk
CrossesSouth Platte River
Location1S Brule
RouteState Highway 0L51A
Coordinates41.08584, -101.88806
Functional classRural Major Collector

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 protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40.8 US tons
Inventory rating25.4 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans11
Design loadH 15
Structure length700 ft (213.4 m)
Longest span85 ft (25.9 m)
Deck width39 ft (12 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,235 (2018)
Projected traffic1,667 by 2038
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed111.8 mi (180 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 L51A Brule Cnlk over South Platte River built?

It was built in 1934, making it 91 years old in 2025. It was reconstructed in 1976.

What condition is L51A Brule Cnlk over South Platte 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 L51A Brule Cnlk over South Platte River carry?

About 1,235 vehicles per day (2018 count), of which roughly 9% are trucks.

How long is L51A Brule Cnlk over South Platte River?

The structure is 700 ft (213.4 m) long with a longest span of 85 ft (25.9 m) and a deck 39 ft wide.

Who owns L51A Brule Cnlk over South Platte River?

It is owned by the State Highway Agency.