US Bridges

I 90 Wbl over S.Fk.Coeur Dalene River

Fair

Shoshone County, Idaho · Kellogg Wcl · Structure no. 000000000017105

Built
1964
61 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
152 ft
3 main spans
Daily traffic
9,500
2023 count
Owner
State
State Highway Agency

About this bridge

I 90 Wbl over S.Fk.Coeur Dalene River is a prestressed concrete stringer/multi-beam or girder carrying I 90 Wbl over S.Fk.Coeur Dalene River 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 5 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 9,500 vehicles a day, roughly 18% of them trucks, projected to reach 14,250 by 2042. The structure is 152 ft (46.3 m) long and 40 ft wide.

Location

Open in Google Maps
CarriesI 90 Wbl
CrossesS.Fk.Coeur Dalene River
LocationKellogg Wcl
RouteInterstate 90
CountyShoshone County
StateIdaho
Coordinates47.54803, -116.13758
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.
Superstructure8 Very GoodNo problems noted.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59 US tons
Inventory rating35.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length152 ft (46.3 m)
Longest span49 ft (14.9 m)
Deck width40 ft (12.2 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,500 (2023)
Projected traffic14,250 by 2042
Trucks18%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.8 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was I 90 Wbl over S.Fk.Coeur Dalene River built?

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

What condition is I 90 Wbl 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 Wbl over S.Fk.Coeur Dalene River carry?

About 9,500 vehicles per day (2023 count), of which roughly 18% are trucks.

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

The structure is 152 ft (46.3 m) long with a longest span of 49 ft (14.9 m) and a deck 40 ft wide.

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

It is owned by the State Highway Agency.