US Bridges

Stp 7446;SUNNYSIDE over Idaho Canal

Fair

Bonneville County, Idaho · 1.6 S 1.0 E Idaho Falls · Structure no. 000000000021626

Built
2004
21 years old
Condition
Fair
inspected March 2024
Type
Frame
Concrete
Length
35 ft
1 main span
Daily traffic
32,000
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Stp 7446;SUNNYSIDE over Idaho Canal is a concrete frame carrying Stp 7446;SUNNYSIDE over Idaho Canal in Bonneville County, Idaho. It was built in 2004, so it is 21 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 32,000 vehicles a day, roughly 3% of them trucks, projected to reach 48,000 by 2042. The structure is 35 ft (10.7 m) long and 95 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesStp 7446;SUNNYSIDE
CrossesIdaho Canal
Location1.6 S 1.0 E Idaho Falls
RouteCity Street 7446
CountyBonneville County
StateIdaho
Coordinates43.46825, -112.01981
Functional classUrban Other Principal 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 protection8 Very GoodNo problems noted.
Last inspectionMarch 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating89.9 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHS 25 or greater
Structure length35 ft (10.7 m)
Longest span35 ft (10.7 m)
Deck width95 ft (28.9 m)
Roadway width71 ft (21.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic32,000 (2023)
Projected traffic48,000 by 2042
Trucks3%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Stp 7446;SUNNYSIDE over Idaho Canal built?

It was built in 2004, making it 21 years old in 2025.

What condition is Stp 7446;SUNNYSIDE over Idaho 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 March 2024.

How much traffic does Stp 7446;SUNNYSIDE over Idaho Canal carry?

About 32,000 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Stp 7446;SUNNYSIDE over Idaho Canal?

The structure is 35 ft (10.7 m) long with a longest span of 35 ft (10.7 m) and a deck 95 ft wide.

Who owns Stp 7446;SUNNYSIDE over Idaho Canal?

It is owned by the City or Municipal Highway Agency.