US Bridges

Stc 3734;LAKE Ave over Phyllis Canal

Fair

Canyon County, Idaho · 3.3 N. 8.0 E. Marsing · Structure no. 000000000019696

Built
1995
30 years old
Condition
Fair
inspected November 2023
Type
Frame
Concrete
Length
22 ft
1 main span
Daily traffic
5,000
2023 count
Owner
Local
Other Local Agency

About this bridge

Stc 3734;LAKE Ave over Phyllis Canal is a concrete frame carrying Stc 3734;LAKE Ave over Phyllis Canal in Canyon County, Idaho. It was built in 1995, so it is 30 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.

It carries about 5,000 vehicles a day, roughly 4% of them trucks, projected to reach 7,500 by 2042. The structure is 22 ft (6.7 m) long and 37 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesStc 3734;LAKE Ave
CrossesPhyllis Canal
Location3.3 N. 8.0 E. Marsing
RouteCounty Highway 3734
CountyCanyon County
StateIdaho
Coordinates43.59394, -116.65297
Functional classUrban Minor Arterial

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 protection7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39 US tons
Inventory rating23 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length22 ft (6.7 m)
Longest span22 ft (6.7 m)
Deck width37 ft (11.3 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,000 (2023)
Projected traffic7,500 by 2042
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 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 Stc 3734;LAKE Ave over Phyllis Canal built?

It was built in 1995, making it 30 years old in 2025.

What condition is Stc 3734;LAKE Ave over Phyllis 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 November 2023.

How much traffic does Stc 3734;LAKE Ave over Phyllis Canal carry?

About 5,000 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Stc 3734;LAKE Ave over Phyllis Canal?

The structure is 22 ft (6.7 m) long with a longest span of 22 ft (6.7 m) and a deck 37 ft wide.

Who owns Stc 3734;LAKE Ave over Phyllis Canal?

It is owned by the Other Local Agency.