US Bridges

County Highway over Tri-County Supply Canal

FairPosted for load

Gosper County, Nebraska · 7N 1W of Smithfield · Structure no. C003733720

Built
1966
59 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
217 ft
7 main spans
Daily traffic
20
2011 count
Owner
Local
Other Local Agency

About this bridge

County Highway over Tri-County Supply Canal is a wood or timber stringer/multi-beam or girder carrying County Highway over Tri-County Supply Canal in Gosper County, Nebraska. It was built in 1966, so it is 59 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. Its operating status is: posted for load restriction.

It carries about 20 vehicles a day, projected to reach 85 by 2033. The structure is 217 ft (66.1 m) long and 20 ft wide. If it were closed, the detour would be 49.7 mi (80 km).

Location

Open in Google Maps
CarriesCounty Highway
CrossesTri-County Supply Canal
Location7N 1W of Smithfield
RouteCounty Highway 337
CountyGosper County
StateNebraska
Coordinates40.6746, -99.7579
Functional classRural Local

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Last inspectionOctober 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating11 US tons
Inventory rating5.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans7
Design loadUnknown
Structure length217 ft (66.1 m)
Longest span32 ft (9.8 m)
Deck width20 ft (6.1 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2011)
Projected traffic85 by 2033
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed49.7 mi (80 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerOther Local Agency
Maintained byOther Local 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 County Highway over Tri-County Supply Canal built?

It was built in 1966, making it 59 years old in 2025.

What condition is County Highway over Tri-County Supply 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 October 2023.

How much traffic does County Highway over Tri-County Supply Canal carry?

About 20 vehicles per day (2011 count).

How long is County Highway over Tri-County Supply Canal?

The structure is 217 ft (66.1 m) long with a longest span of 32 ft (9.8 m) and a deck 20 ft wide.

Who owns County Highway over Tri-County Supply Canal?

It is owned by the Other Local Agency.