US Bridges

1500 East Road over Low Line Canal

FairPosted for load

Twin Falls County, Idaho · 2.5 S. 0.5 E. Buhl · Structure no. 000000000025445

Built
1936
89 years old, rebuilt 1963
Condition
Fair
inspected February 2024
Type
Tee Beam
Prestressed Concrete
Length
41 ft
1 main span
Daily traffic
80
2023 count
Owner
Local
Other Local Agency

About this bridge

1500 East Road over Low Line Canal is a prestressed concrete tee beam carrying 1500 East Road over Low Line Canal in Twin Falls County, Idaho. It was built in 1936 and reconstructed in 1963, so it is 89 years old, older 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 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 80 vehicles a day, roughly 5% of them trucks, projected to reach 120 by 2039. The structure is 41 ft (12.5 m) long and 26 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Carries1500 East Road
CrossesLow Line Canal
Location2.5 S. 0.5 E. Buhl
RouteCounty Highway 0
StateIdaho
Coordinates42.56297, -114.75103
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating38 US tons
Inventory rating23 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length41 ft (12.5 m)
Longest span40 ft (12.2 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic80 (2023)
Projected traffic120 by 2039
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerOther Local Agency
Maintained byOther Local Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$430,000 (2018 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 1500 East Road over Low Line Canal built?

It was built in 1936, making it 89 years old in 2025. It was reconstructed in 1963.

What condition is 1500 East Road over Low Line 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 February 2024.

How much traffic does 1500 East Road over Low Line Canal carry?

About 80 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is 1500 East Road over Low Line Canal?

The structure is 41 ft (12.5 m) long with a longest span of 40 ft (12.2 m) and a deck 26 ft wide.

Who owns 1500 East Road over Low Line Canal?

It is owned by the Other Local Agency.