US Bridges

W 6800 S over Liberty Park Canal

Fair

Madison County, Idaho · 1.7 S. 0.5 E. Thorton · Structure no. 000000000032871

Built
2001
24 years old
Condition
Fair
inspected April 2024
Type
Frame
Concrete
Length
27 ft
1 main span
Daily traffic
190
2023 count
Owner
County
County Highway Agency

About this bridge

W 6800 S over Liberty Park Canal is a concrete frame carrying W 6800 S over Liberty Park Canal in Madison County, Idaho. It was built in 2001, so it is 24 years old, younger than the Idaho average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 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 190 vehicles a day, roughly 27% of them trucks, projected to reach 285 by 2042. The structure is 27 ft (8.2 m) long and 32 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesW 6800 S
CrossesLiberty Park Canal
Location1.7 S. 0.5 E. Thorton
RouteCounty Highway 0
CountyMadison County
StateIdaho
Coordinates43.73197, -111.83553
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating28 US tons
Inventory rating17 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length27 ft (8.2 m)
Longest span27 ft (8.2 m)
Deck width32 ft (9.9 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic190 (2023)
Projected traffic285 by 2042
Trucks27%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$326,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was W 6800 S over Liberty Park Canal built?

It was built in 2001, making it 24 years old in 2025.

What condition is W 6800 S over Liberty Park 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 April 2024.

How much traffic does W 6800 S over Liberty Park Canal carry?

About 190 vehicles per day (2023 count), of which roughly 27% are trucks.

How long is W 6800 S over Liberty Park Canal?

The structure is 27 ft (8.2 m) long with a longest span of 27 ft (8.2 m) and a deck 32 ft wide.

Who owns W 6800 S over Liberty Park Canal?

It is owned by the County Highway Agency.