US Bridges

I 84 Wbl over Main Northside Canal

Fair

Jerome County, Idaho · 13.9 W. Burley · Structure no. 000000000016280

Built
1966
59 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
202 ft
4 main spans
Daily traffic
11,500
2023 count
Owner
State
State Highway Agency

About this bridge

I 84 Wbl over Main Northside Canal is a prestressed concrete stringer/multi-beam or girder carrying I 84 Wbl over Main Northside Canal in Jerome County, Idaho. It was built in 1966, so it is 59 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 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 11,500 vehicles a day, roughly 30% of them trucks, projected to reach 17,250 by 2042. The structure is 202 ft (61.6 m) long and 39 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI 84 Wbl
CrossesMain Northside Canal
Location13.9 W. Burley
RouteInterstate 84
CountyJerome County
StateIdaho
Coordinates42.57623, -114.05734
Functional classRural Principal Arterial - Interstate

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65 US tons
Inventory rating39 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length202 ft (61.6 m)
Longest span49 ft (14.9 m)
Deck width39 ft (12 m)
Roadway width37 ft (11.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,500 (2023)
Projected traffic17,250 by 2042
Trucks30%
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 84 Wbl over Main Northside Canal built?

It was built in 1966, making it 59 years old in 2025.

What condition is I 84 Wbl over Main Northside 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 2023.

How much traffic does I 84 Wbl over Main Northside Canal carry?

About 11,500 vehicles per day (2023 count), of which roughly 30% are trucks.

How long is I 84 Wbl over Main Northside Canal?

The structure is 202 ft (61.6 m) long with a longest span of 49 ft (14.9 m) and a deck 39 ft wide.

Who owns I 84 Wbl over Main Northside Canal?

It is owned by the State Highway Agency.