US Bridges

1500 East Road over High Line Canal

Fair

Twin Falls County, Idaho · 7.2 S. 0.5 E. Buhl · Structure no. 000000000025485

Built
1930
95 years old, rebuilt 1973
Condition
Fair
inspected February 2024
Type
Slab
Concrete Continuous
Length
45 ft
2 main spans
Daily traffic
20
2023 count
Owner
Local
Other Local Agency

About this bridge

1500 East Road over High Line Canal is a concrete continuous slab carrying 1500 East Road over High Line Canal in Twin Falls County, Idaho. It was built in 1930 and reconstructed in 1973, 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.

It carries about 20 vehicles a day, roughly 5% of them trucks, projected to reach 30 by 2039. The structure is 45 ft (13.7 m) long and 20 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
Carries1500 East Road
CrossesHigh Line Canal
Location7.2 S. 0.5 E. Buhl
RouteCounty Highway 0
CountyTwin Falls County
StateIdaho
Coordinates42.49381, -114.75092
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
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 rating38 US tons
Inventory rating23 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 15
Structure length45 ft (13.7 m)
Longest span22 ft (6.7 m)
Deck width20 ft (6.1 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2023)
Projected traffic30 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$471,000 (2018 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 1500 East Road over High Line Canal built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1973.

What condition is 1500 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 1500 East Road over High Line Canal carry?

About 20 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is 1500 East Road over High Line Canal?

The structure is 45 ft (13.7 m) long with a longest span of 22 ft (6.7 m) and a deck 20 ft wide.

Who owns 1500 East Road over High Line Canal?

It is owned by the Other Local Agency.