US Bridges

Sma 7166;1st ST over Idaho Canal

Fair

Bonneville County, Idaho · In Idaho FALLS;1st St. · Structure no. 000000000021335

Built
1980
45 years old
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
60 ft
2 main spans
Daily traffic
18,000
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Sma 7166;1st ST over Idaho Canal is a prestressed concrete stringer/multi-beam or girder carrying Sma 7166;1st ST over Idaho Canal in Bonneville County, Idaho. It was built in 1980, so it is 45 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 18,000 vehicles a day, roughly 1% of them trucks, projected to reach 27,000 by 2042. The structure is 60 ft (18.3 m) long and 81 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesSma 7166;1st ST
CrossesIdaho Canal
LocationIn Idaho FALLS;1st St.
RouteCity Street 7166
CountyBonneville County
StateIdaho
Coordinates43.49681, -112.00431
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.9 US tons
Inventory rating30 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length60 ft (18.3 m)
Longest span29 ft (8.8 m)
Deck width81 ft (24.7 m)
Roadway width65 ft (19.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,000 (2023)
Projected traffic27,000 by 2042
Trucks1%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 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 Sma 7166;1st ST over Idaho Canal built?

It was built in 1980, making it 45 years old in 2025.

What condition is Sma 7166;1st ST 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 Sma 7166;1st ST over Idaho Canal carry?

About 18,000 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is Sma 7166;1st ST over Idaho Canal?

The structure is 60 ft (18.3 m) long with a longest span of 29 ft (8.8 m) and a deck 81 ft wide.

Who owns Sma 7166;1st ST over Idaho Canal?

It is owned by the City or Municipal Highway Agency.