US Bridges

I 15 Sbl over Lava Side Canal

Good

Bingham County, Idaho · 6.9 N. Blackfoot · Structure no. 000000000011585

Built
1962
63 years old
Condition
Good
inspected February 2025
Type
Frame
Concrete
Length
20 ft
1 main span
Daily traffic
14,250
2023 count
Owner
State
State Highway Agency

About this bridge

I 15 Sbl over Lava Side Canal is a concrete frame carrying I 15 Sbl over Lava Side Canal in Bingham County, Idaho. It was built in 1962, so it is 63 years old, older than the Idaho average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 14,250 vehicles a day, roughly 16% of them trucks, projected to reach 21,375 by 2042. The structure is 20 ft (6.1 m) long and 48 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI 15 Sbl
CrossesLava Side Canal
Location6.9 N. Blackfoot
RouteInterstate 15
StateIdaho
Coordinates43.28281, -112.29056
Functional classRural Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2025
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67 US tons
Inventory rating40 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length20 ft (6.1 m)
Longest span20 ft (6.1 m)
Deck width48 ft (14.7 m)
Roadway width38 ft (11.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,250 (2023)
Projected traffic21,375 by 2042
Trucks16%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway 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 I 15 Sbl over Lava Side Canal built?

It was built in 1962, making it 63 years old in 2025.

What condition is I 15 Sbl over Lava Side Canal in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in February 2025.

How much traffic does I 15 Sbl over Lava Side Canal carry?

About 14,250 vehicles per day (2023 count), of which roughly 16% are trucks.

How long is I 15 Sbl over Lava Side Canal?

The structure is 20 ft (6.1 m) long with a longest span of 20 ft (6.1 m) and a deck 48 ft wide.

Who owns I 15 Sbl over Lava Side Canal?

It is owned by the State Highway Agency.