US Bridges

I 90RAMP EB on over S.Fk.Cda R.;eb on Ramp

Fair

Shoshone County, Idaho · 3.6 E. Wallace · Structure no. 000000000017435

Built
1964
61 years old
Condition
Fair
inspected September 2023
Type
Tee Beam
Concrete
Length
64 ft
1 main span
Daily traffic
20
2023 count
Owner
State
State Highway Agency

About this bridge

I 90RAMP EB on over S.Fk.Cda R.;eb on Ramp is a concrete tee beam carrying I 90RAMP EB on over S.Fk.Cda R.;eb on Ramp in Shoshone County, Idaho. It was built in 1964, so it is 61 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 20 vehicles a day, projected to reach 30 by 2042. The structure is 64 ft (19.5 m) long and 22 ft wide.

Location

Open in Google Maps
CarriesI 90RAMP EB on
CrossesS.Fk.Cda R.;eb on Ramp
Location3.6 E. Wallace
RouteInterstate 90
CountyShoshone County
StateIdaho
Coordinates47.46681, -115.84639
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 inspectionSeptember 2023
Inspection intervalevery 24 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 adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50 US tons
Inventory rating30 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length64 ft (19.5 m)
Longest span61 ft (18.6 m)
Deck width22 ft (6.7 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2023)
Projected traffic30 by 2042
Trucks0%
Lanes on structure1
Traffic directionOne-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 90RAMP EB on over S.Fk.Cda R.;eb on Ramp built?

It was built in 1964, making it 61 years old in 2025.

What condition is I 90RAMP EB on over S.Fk.Cda R.;eb on Ramp 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 2023.

How much traffic does I 90RAMP EB on over S.Fk.Cda R.;eb on Ramp carry?

About 20 vehicles per day (2023 count).

How long is I 90RAMP EB on over S.Fk.Cda R.;eb on Ramp?

The structure is 64 ft (19.5 m) long with a longest span of 61 ft (18.6 m) and a deck 22 ft wide.

Who owns I 90RAMP EB on over S.Fk.Cda R.;eb on Ramp?

It is owned by the State Highway Agency.