US Bridges

FAS 1685 over Tri-County Supply Canal

PoorPosted for load

Gosper County, Nebraska · 5W US283 Dawson Cl · Structure no. C003700205

Built
1970
55 years old
Condition
Poor
inspected October 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
135 ft
5 main spans
Daily traffic
45
2011 count
Owner
Local
Other Local Agency

About this bridge

FAS 1685 over Tri-County Supply Canal is a wood or timber stringer/multi-beam or girder carrying FAS 1685 over Tri-County Supply Canal in Gosper County, Nebraska. It was built in 1970, so it is 55 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 45 vehicles a day, projected to reach 45 by 2033. The structure is 135 ft (41.1 m) long and 20 ft wide. If it were closed, the detour would be 62.1 mi (100 km).

CarriesFAS 1685
CrossesTri-County Supply Canal
Location5W US283 Dawson Cl
RouteCounty Highway 1685
Coordinates40.7, -99.8867
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating5.5 US tons
Inventory rating3.3 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans5
Design loadUnknown
Structure length135 ft (41.1 m)
Longest span29 ft (8.8 m)
Deck width20 ft (6.1 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic45 (2011)
Projected traffic45 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

OwnerOther Local Agency
Maintained byOther Local Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FAS 1685 over Tri-County Supply Canal built?

It was built in 1970, making it 55 years old in 2025.

What condition is FAS 1685 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 October 2024.

How much traffic does FAS 1685 over Tri-County Supply Canal carry?

About 45 vehicles per day (2011 count).

How long is FAS 1685 over Tri-County Supply Canal?

The structure is 135 ft (41.1 m) long with a longest span of 29 ft (8.8 m) and a deck 20 ft wide.

Who owns FAS 1685 over Tri-County Supply Canal?

It is owned by the Other Local Agency.