US Bridges

1700 East RD over High Line Canal

Fair

Twin Falls County, Idaho · 5.7 S. 2.4 E. Buhl · Structure no. 000000000025385

Built
1981
44 years old, rebuilt 1991
Condition
Fair
inspected February 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
80 ft
2 main spans
Daily traffic
420
2023 count
Owner
Local
Other Local Agency

About this bridge

1700 East RD over High Line Canal is a steel stringer/multi-beam or girder carrying 1700 East RD over High Line Canal in Twin Falls County, Idaho. It was built in 1981 and reconstructed in 1991, so it is 44 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 420 vehicles a day, roughly 14% of them trucks, projected to reach 630 by 2042. The structure is 80 ft (24.4 m) long and 27 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
Carries1700 East RD
CrossesHigh Line Canal
Location5.7 S. 2.4 E. Buhl
RouteCounty Highway 0
CountyTwin Falls County
StateIdaho
Coordinates42.51608, -114.71203
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.
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 inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
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 alignment7: Better than present minimum criteria
Operating rating54 US tons
Inventory rating32 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length80 ft (24.4 m)
Longest span39 ft (11.9 m)
Deck width27 ft (8.2 m)
Roadway width25 ft (7.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic420 (2023)
Projected traffic630 by 2042
Trucks14%
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$721,000 (2019 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 1700 East RD over High Line Canal built?

It was built in 1981, making it 44 years old in 2025. It was reconstructed in 1991.

What condition is 1700 East RD 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 2023.

How much traffic does 1700 East RD over High Line Canal carry?

About 420 vehicles per day (2023 count), of which roughly 14% are trucks.

How long is 1700 East RD over High Line Canal?

The structure is 80 ft (24.4 m) long with a longest span of 39 ft (11.9 m) and a deck 27 ft wide.

Who owns 1700 East RD over High Line Canal?

It is owned by the Other Local Agency.