US Bridges

STC2713;3700 N. RD over Low Line Canal

Fair

Twin Falls County, Idaho · 2S/2.5E FILER;3700N-2450E · Structure no. 000000000019360

Built
1953
72 years old
Condition
Fair
inspected February 2023
Type
Tee Beam
Prestressed Concrete
Length
105 ft
2 main spans
Daily traffic
2,000
2023 count
Owner
Local
Other Local Agency

About this bridge

STC2713;3700 N. RD over Low Line Canal is a prestressed concrete tee beam carrying STC2713;3700 N. RD over Low Line Canal in Twin Falls County, Idaho. It was built in 1953, so it is 72 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 2,000 vehicles a day, roughly 18% of them trucks, projected to reach 3,000 by 2042. The structure is 105 ft (32 m) long and 37 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesSTC2713;3700 N. RD
CrossesLow Line Canal
Location2S/2.5E FILER;3700N-2450E
RouteCounty Highway 2713
CountyTwin Falls County
StateIdaho
Coordinates42.53478, -114.56789
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating30 US tons
Inventory rating18 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadH 15
Structure length105 ft (32 m)
Longest span50 ft (15.2 m)
Deck width37 ft (11.3 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,000 (2023)
Projected traffic3,000 by 2042
Trucks18%
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$1.4 million (2019 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was STC2713;3700 N. RD over Low Line Canal built?

It was built in 1953, making it 72 years old in 2025.

What condition is STC2713;3700 N. 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 STC2713;3700 N. RD over Low Line Canal carry?

About 2,000 vehicles per day (2023 count), of which roughly 18% are trucks.

How long is STC2713;3700 N. RD over Low Line Canal?

The structure is 105 ft (32 m) long with a longest span of 50 ft (15.2 m) and a deck 37 ft wide.

Who owns STC2713;3700 N. RD over Low Line Canal?

It is owned by the Other Local Agency.