US Bridges

I 90RAMPS Bc & Cd over Canyon Creek

Fair

Shoshone County, Idaho · In Wallace · Structure no. 000000000017425

Built
1985
40 years old
Condition
Fair
inspected September 2021
Type
Tee Beam
Prestressed Concrete
Length
39 ft
1 main span
Daily traffic
550
2023 count
Owner
State
State Highway Agency

About this bridge

I 90RAMPS Bc & Cd over Canyon Creek is a prestressed concrete tee beam carrying I 90RAMPS Bc & Cd over Canyon Creek in Shoshone County, Idaho. It was built in 1985, so it is 40 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 550 vehicles a day, projected to reach 825 by 2042. The structure is 39 ft (11.9 m) long and 50 ft wide.

Location

Open in Google Maps
CarriesI 90RAMPS Bc & Cd
CrossesCanyon Creek
LocationIn Wallace
RouteInterstate 90
CountyShoshone County
StateIdaho
Coordinates47.47275, -115.91503
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70 US tons
Inventory rating37 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length39 ft (11.9 m)
Longest span39 ft (11.9 m)
Deck width50 ft (15.3 m)
Roadway width47 ft (14.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic550 (2023)
Projected traffic825 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was I 90RAMPS Bc & Cd over Canyon Creek built?

It was built in 1985, making it 40 years old in 2025.

What condition is I 90RAMPS Bc & Cd over Canyon Creek 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 September 2021.

How much traffic does I 90RAMPS Bc & Cd over Canyon Creek carry?

About 550 vehicles per day (2023 count).

How long is I 90RAMPS Bc & Cd over Canyon Creek?

The structure is 39 ft (11.9 m) long with a longest span of 39 ft (11.9 m) and a deck 50 ft wide.

Who owns I 90RAMPS Bc & Cd over Canyon Creek?

It is owned by the State Highway Agency.