US Bridges

STC2705;1400 E. RD over Low Line Canal

FairPosted for load

Twin Falls County, Idaho · 2.8 S. 0.6 W. Buhl · Structure no. 000000000019350

Built
1984
41 years old
Condition
Fair
inspected February 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
44 ft
3 main spans
Daily traffic
1,100
2023 count
Owner
Local
Other Local Agency

About this bridge

STC2705;1400 E. RD over Low Line Canal is a steel stringer/multi-beam or girder carrying STC2705;1400 E. RD over Low Line Canal in Twin Falls County, Idaho. It was built in 1984, so it is 41 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 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 1,100 vehicles a day, roughly 21% of them trucks, projected to reach 1,650 by 2042. The structure is 44 ft (13.4 m) long and 30 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesSTC2705;1400 E. RD
CrossesLow Line Canal
Location2.8 S. 0.6 W. Buhl
RouteCounty Highway 2705
CountyTwin Falls County
StateIdaho
Coordinates42.5575, -114.77058
Functional classRural Major Collector

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating32 US tons
Inventory rating19 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length44 ft (13.4 m)
Longest span43 ft (13.1 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,100 (2023)
Projected traffic1,650 by 2042
Trucks21%
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$676,000 (2017 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was STC2705;1400 E. RD over Low Line Canal built?

It was built in 1984, making it 41 years old in 2025.

What condition is STC2705;1400 E. RD 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 2023.

How much traffic does STC2705;1400 E. RD over Low Line Canal carry?

About 1,100 vehicles per day (2023 count), of which roughly 21% are trucks.

How long is STC2705;1400 E. RD over Low Line Canal?

The structure is 44 ft (13.4 m) long with a longest span of 43 ft (13.1 m) and a deck 30 ft wide.

Who owns STC2705;1400 E. RD over Low Line Canal?

It is owned by the Other Local Agency.