US Bridges

I 90 over S.Fk.Coeur Dalene River

Fair

Shoshone County, Idaho · In Wallace · Structure no. 000000000017235

Built
1987
38 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
153 ft
2 main spans
Daily traffic
11,000
2023 count
Owner
State
State Highway Agency

About this bridge

I 90 over S.Fk.Coeur Dalene River is a prestressed concrete continuous stringer/multi-beam or girder carrying I 90 over S.Fk.Coeur Dalene River in Shoshone County, Idaho. It was built in 1987, so it is 38 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 11,000 vehicles a day, roughly 36% of them trucks, projected to reach 16,500 by 2042. The structure is 153 ft (46.6 m) long and 127 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesI 90
CrossesS.Fk.Coeur Dalene River
LocationIn Wallace
RouteInterstate 90
CountyShoshone County
StateIdaho
Coordinates47.48003, -115.93533
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 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 rating52 US tons
Inventory rating29 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 25 or greater
Structure length153 ft (46.6 m)
Longest span75 ft (22.9 m)
Deck width127 ft (38.7 m)
Roadway width124 ft (37.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,000 (2023)
Projected traffic16,500 by 2042
Trucks36%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 90 over S.Fk.Coeur Dalene River built?

It was built in 1987, making it 38 years old in 2025.

What condition is I 90 over S.Fk.Coeur Dalene River 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 2024.

How much traffic does I 90 over S.Fk.Coeur Dalene River carry?

About 11,000 vehicles per day (2023 count), of which roughly 36% are trucks.

How long is I 90 over S.Fk.Coeur Dalene River?

The structure is 153 ft (46.6 m) long with a longest span of 75 ft (22.9 m) and a deck 127 ft wide.

Who owns I 90 over S.Fk.Coeur Dalene River?

It is owned by the State Highway Agency.