US Bridges

STC2730;3000 E. RD over Low Line Canal

Fair

Twin Falls County, Idaho · 3S.TWIN FALLS;3500N-3000E · Structure no. 000000000019410

Built
1964
61 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
83 ft
1 main span
Daily traffic
1,400
2023 count
Owner
Local
Other Local Agency

About this bridge

STC2730;3000 E. RD over Low Line Canal is a prestressed concrete stringer/multi-beam or girder carrying STC2730;3000 E. RD over Low Line Canal in Twin Falls County, Idaho. It was built in 1964, so it is 61 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 6 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 1,400 vehicles a day, roughly 24% of them trucks, projected to reach 2,100 by 2042. The structure is 83 ft (25.3 m) long and 30 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesSTC2730;3000 E. RD
CrossesLow Line Canal
Location3S.TWIN FALLS;3500N-3000E
RouteCounty Highway 2730
CountyTwin Falls County
StateIdaho
Coordinates42.5075, -114.46028
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating80 US tons
Inventory rating47 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length83 ft (25.3 m)
Longest span80 ft (24.4 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,400 (2023)
Projected traffic2,100 by 2042
Trucks24%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was STC2730;3000 E. RD over Low Line Canal built?

It was built in 1964, making it 61 years old in 2025.

What condition is STC2730;3000 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 2024.

How much traffic does STC2730;3000 E. RD over Low Line Canal carry?

About 1,400 vehicles per day (2023 count), of which roughly 24% are trucks.

How long is STC2730;3000 E. RD over Low Line Canal?

The structure is 83 ft (25.3 m) long with a longest span of 80 ft (24.4 m) and a deck 30 ft wide.

Who owns STC2730;3000 E. RD over Low Line Canal?

It is owned by the Other Local Agency.