US Bridges

W 17th N over Oakland Canal

Fair

Bonneville County, Idaho · 1.4 N. 4.8 W. Idaho Falls · Structure no. 000000000031210

Built
1973
52 years old
Condition
Fair
inspected November 2023
Type
Frame
Concrete
Length
21 ft
1 main span
Daily traffic
70
2023 count
Owner
County
County Highway Agency

About this bridge

W 17th N over Oakland Canal is a concrete frame carrying W 17th N over Oakland Canal in Bonneville County, Idaho. It was built in 1973, so it is 52 years old, older 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 5 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 70 vehicles a day, roughly 17% of them trucks, projected to reach 105 by 2042. The structure is 21 ft (6.4 m) long and 36 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesW 17th N
CrossesOakland Canal
Location1.4 N. 4.8 W. Idaho Falls
RouteCounty Highway 0
CountyBonneville County
StateIdaho
Coordinates43.51161, -112.13058
Functional classRural Local

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38 US tons
Inventory rating23 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 15
Structure length21 ft (6.4 m)
Longest span21 ft (6.4 m)
Deck width36 ft (11 m)
Roadway width35 ft (10.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic70 (2023)
Projected traffic105 by 2042
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$284,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was W 17th N over Oakland Canal built?

It was built in 1973, making it 52 years old in 2025.

What condition is W 17th N over Oakland 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 W 17th N over Oakland Canal carry?

About 70 vehicles per day (2023 count), of which roughly 17% are trucks.

How long is W 17th N over Oakland Canal?

The structure is 21 ft (6.4 m) long with a longest span of 21 ft (6.4 m) and a deck 36 ft wide.

Who owns W 17th N over Oakland Canal?

It is owned by the County Highway Agency.