US Bridges

I86 EB Off Ramp over Ramp En over Ramp NW

Good

Bannock County, Idaho · 1.2 E. Chubbuck · Structure no. 000000000010938

Built
2024
1 years old
Condition
Good
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
94 ft
1 main span
Daily traffic
3,700
2024 count
Owner
State
State Highway Agency

About this bridge

I86 EB Off Ramp over Ramp En over Ramp NW is a prestressed concrete stringer/multi-beam or girder carrying I86 EB Off Ramp over Ramp En over Ramp NW in Bannock County, Idaho. It was built in 2024, so it is 1 years old, younger than the Idaho average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 3,700 vehicles a day, projected to reach 5,550 by 2024. The structure is 94 ft (28.7 m) long and 41 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesI86 EB Off Ramp
CrossesRamp En over Ramp NW
Location1.2 E. Chubbuck
RouteInterstate 86
CountyBannock County
StateIdaho
Coordinates42.913, -112.44319
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.3 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length94 ft (28.7 m)
Longest span90 ft (27.4 m)
Deck width41 ft (12.4 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,700 (2024)
Projected traffic5,550 by 2024
Trucks—
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesOther
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I86 EB Off Ramp over Ramp En over Ramp NW built?

It was built in 2024, making it 1 years old in 2025.

What condition is I86 EB Off Ramp over Ramp En over Ramp NW in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2024.

How much traffic does I86 EB Off Ramp over Ramp En over Ramp NW carry?

About 3,700 vehicles per day (2024 count).

How long is I86 EB Off Ramp over Ramp En over Ramp NW?

The structure is 94 ft (28.7 m) long with a longest span of 90 ft (27.4 m) and a deck 41 ft wide.

Who owns I86 EB Off Ramp over Ramp En over Ramp NW?

It is owned by the State Highway Agency.