US Bridges

1050 East Road over High Line Canal

FairPosted for load

Twin Falls County, Idaho · 9.0 S. 4.1 W. Buhl · Structure no. 000000000025585

Built
1930
95 years old, rebuilt 1977
Condition
Fair
inspected February 2024
Type
Tee Beam
Prestressed Concrete
Length
35 ft
1 main span
Daily traffic
30
2023 count
Owner
Local
Other Local Agency

About this bridge

1050 East Road over High Line Canal is a prestressed concrete tee beam carrying 1050 East Road over High Line Canal in Twin Falls County, Idaho. It was built in 1930 and reconstructed in 1977, so it is 95 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 5 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 30 vehicles a day, roughly 10% of them trucks, projected to reach 45 by 2039. The structure is 35 ft (10.7 m) long and 20 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Carries1050 East Road
CrossesHigh Line Canal
Location9.0 S. 4.1 W. Buhl
RouteCounty Highway 0
StateIdaho
Coordinates42.46806, -114.83917
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
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 inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating30 US tons
Inventory rating18 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length35 ft (10.7 m)
Longest span33 ft (10.1 m)
Deck width20 ft (6.2 m)
Roadway width19 ft (5.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2023)
Projected traffic45 by 2039
Trucks10%
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$388,000 (2018 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 1050 East Road over High Line Canal built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1977.

What condition is 1050 East Road over High 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 1050 East Road over High Line Canal carry?

About 30 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is 1050 East Road over High Line Canal?

The structure is 35 ft (10.7 m) long with a longest span of 33 ft (10.1 m) and a deck 20 ft wide.

Who owns 1050 East Road over High Line Canal?

It is owned by the Other Local Agency.