US Bridges

Stc 7146;GARFIELD over Idaho Canal

Fair

Bonneville County, Idaho · In Idaho Falls · Structure no. 000000000031426

Built
2012
13 years old
Condition
Fair
inspected March 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
58 ft
1 main span
Daily traffic
1,600
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Stc 7146;GARFIELD over Idaho Canal is a prestressed concrete box beam or girders - multiple carrying Stc 7146;GARFIELD over Idaho Canal in Bonneville County, Idaho. It was built in 2012, so it is 13 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 1,600 vehicles a day, roughly 2% of them trucks, projected to reach 2,400 by 2042. The structure is 58 ft (17.7 m) long and 49 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesStc 7146;GARFIELD
CrossesIdaho Canal
LocationIn Idaho Falls
RouteCity Street 7146
CountyBonneville County
StateIdaho
Coordinates43.50061, -112.00597
Functional classUrban 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.
Superstructure8 Very GoodNo problems noted.
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 evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating80.7 US tons
Inventory rating47.2 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length58 ft (17.7 m)
Longest span55 ft (16.8 m)
Deck width49 ft (14.9 m)
Roadway width36 ft (10.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,600 (2023)
Projected traffic2,400 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

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 Stc 7146;GARFIELD over Idaho Canal built?

It was built in 2012, making it 13 years old in 2025.

What condition is Stc 7146;GARFIELD 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 Stc 7146;GARFIELD over Idaho Canal carry?

About 1,600 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is Stc 7146;GARFIELD over Idaho Canal?

The structure is 58 ft (17.7 m) long with a longest span of 55 ft (16.8 m) and a deck 49 ft wide.

Who owns Stc 7146;GARFIELD over Idaho Canal?

It is owned by the City or Municipal Highway Agency.