US Bridges

Johnson Lake DR over Tri-County Supply Canal

PoorPosted for load

Gosper County, Nebraska · JCT US283/N23 1W 7.3N · Structure no. C003702305P

Built
1935
90 years old
Condition
Poor
inspected November 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
137 ft
5 main spans
Daily traffic
1,220
2017 count
Owner
County
County Highway Agency

About this bridge

Johnson Lake DR over Tri-County Supply Canal is a wood or timber stringer/multi-beam or girder carrying Johnson Lake DR over Tri-County Supply Canal in Gosper County, Nebraska. It was built in 1935, 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 poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 1,220 vehicles a day, projected to reach 1,500 by 2033. The structure is 137 ft (41.8 m) long and 22 ft wide. If it were closed, the detour would be 62.1 mi (100 km).

CarriesJohnson Lake DR
CrossesTri-County Supply Canal
LocationJCT US283/N23 1W 7.3N
RouteCounty Highway 1687
Coordinates40.6962, -99.8786
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating23.1 US tons
Inventory rating14.3 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans5
Design loadUnknown
Structure length137 ft (41.8 m)
Longest span28 ft (8.5 m)
Deck width22 ft (6.8 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,220 (2017)
Projected traffic1,500 by 2033
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed62.1 mi (100 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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Johnson Lake DR over Tri-County Supply Canal built?

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

What condition is Johnson Lake DR over Tri-County Supply Canal in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in November 2023.

How much traffic does Johnson Lake DR over Tri-County Supply Canal carry?

About 1,220 vehicles per day (2017 count).

How long is Johnson Lake DR over Tri-County Supply Canal?

The structure is 137 ft (41.8 m) long with a longest span of 28 ft (8.5 m) and a deck 22 ft wide.

Who owns Johnson Lake DR over Tri-County Supply Canal?

It is owned by the County Highway Agency.