US Bridges

I 90 Spur over Canyon Creek

Fair

Shoshone County, Idaho · Inside Wallace Ecl · Structure no. 000000000017255

Built
1940
85 years old
Condition
Fair
inspected September 2024
Type
Slab
Concrete
Length
37 ft
2 main spans
Daily traffic
10,500
2023 count
Owner
State
State Highway Agency

About this bridge

I 90 Spur over Canyon Creek is a concrete slab carrying I 90 Spur over Canyon Creek in Shoshone County, Idaho. It was built in 1940, so it is 85 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 10,500 vehicles a day, roughly 38% of them trucks, projected to reach 15,750 by 2042. The structure is 37 ft (11.3 m) long and 48 ft wide.

Location

Open in Google Maps
CarriesI 90 Spur
CrossesCanyon Creek
LocationInside Wallace Ecl
RouteInterstate 90
CountyShoshone County
StateIdaho
Coordinates47.47236, -115.91511
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 2024
Inspection intervalevery 48 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 alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating64 US tons
Inventory rating38 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadH 15
Structure length37 ft (11.3 m)
Longest span18 ft (5.5 m)
Deck width48 ft (14.6 m)
Roadway width39 ft (11.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,500 (2023)
Projected traffic15,750 by 2042
Trucks38%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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 90 Spur over Canyon Creek built?

It was built in 1940, making it 85 years old in 2025.

What condition is I 90 Spur 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 2024.

How much traffic does I 90 Spur over Canyon Creek carry?

About 10,500 vehicles per day (2023 count), of which roughly 38% are trucks.

How long is I 90 Spur over Canyon Creek?

The structure is 37 ft (11.3 m) long with a longest span of 18 ft (5.5 m) and a deck 48 ft wide.

Who owns I 90 Spur over Canyon Creek?

It is owned by the State Highway Agency.