US Bridges

RD 3400 over Superior Canal

Fair

Nuckolls County, Nebraska · JCT N8/N14 2W .8N · Structure no. C006511910

Built
1935
90 years old, rebuilt 1975
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
24 ft
1 main span
Daily traffic
245
2011 count
Owner
County
County Highway Agency

About this bridge

RD 3400 over Superior Canal is a steel stringer/multi-beam or girder carrying RD 3400 over Superior Canal in Nuckolls County, Nebraska. It was built in 1935 and reconstructed in 1975, so it is 90 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 245 vehicles a day, projected to reach 245 by 2033. The structure is 24 ft (7.3 m) long and 29 ft wide. If it were closed, the detour would be 31.1 mi (50 km).

Location

Open in Google Maps
CarriesRD 3400
CrossesSuperior Canal
LocationJCT N8/N14 2W .8N
RouteCounty Highway 1990
CountyNuckolls County
StateNebraska
Coordinates40.0299, -98.1043
Functional classRural Major Collector

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 inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.5 US tons
Inventory rating36.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length24 ft (7.3 m)
Longest span23 ft (7 m)
Deck width29 ft (8.7 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic245 (2011)
Projected traffic245 by 2033
Trucks0%
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

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 RD 3400 over Superior Canal built?

It was built in 1935, making it 90 years old in 2025. It was reconstructed in 1975.

What condition is RD 3400 over Superior Canal 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 September 2024.

How much traffic does RD 3400 over Superior Canal carry?

About 245 vehicles per day (2011 count).

How long is RD 3400 over Superior Canal?

The structure is 24 ft (7.3 m) long with a longest span of 23 ft (7 m) and a deck 29 ft wide.

Who owns RD 3400 over Superior Canal?

It is owned by the County Highway Agency.