US Bridges

I 90 over Bennett Bay;sunnyside RD

Fair

Kootenai County, Idaho · 2.0E. 2.0S. Coeur Dalene · Structure no. 000000000016896

Built
1991
34 years old
Condition
Fair
inspected May 2023
Type
Segmental Box Girder
Prestressed Concrete Continuous
Length
1,730 ft
4 main spans
Daily traffic
18,500
2023 count
Owner
State
State Highway Agency

About this bridge

I 90 over Bennett Bay;sunnyside RD is a prestressed concrete continuous segmental box girder carrying I 90 over Bennett Bay;sunnyside RD in Kootenai County, Idaho. It was built in 1991, so it is 34 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 18,500 vehicles a day, roughly 22% of them trucks, projected to reach 27,750 by 2042. The structure is 1,730 ft (527.3 m) long and 84 ft wide. If it were closed, the detour would be 62.1 mi (100 km).

Location

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CarriesI 90
CrossesBennett Bay;sunnyside RD
Location2.0E. 2.0S. Coeur Dalene
RouteInterstate 90
CountyKootenai County
StateIdaho
Coordinates47.6495, -116.715
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 protection9 ExcellentNo problems noted.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations on dry land well above flood water elevations
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 rating65 US tons
Inventory rating49.1 US tons

Structure

Structure typeSegmental Box Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 25 or greater
Structure length1,730 ft (527.3 m)
Longest span520 ft (158.5 m)
Deck width84 ft (25.5 m)
Roadway width79 ft (24 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,500 (2023)
Projected traffic27,750 by 2042
Trucks22%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and waterway
Detour if closed62.1 mi (100 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$36 million (2017 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was I 90 over Bennett Bay;sunnyside RD built?

It was built in 1991, making it 34 years old in 2025.

What condition is I 90 over Bennett Bay;sunnyside RD 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 May 2023.

How much traffic does I 90 over Bennett Bay;sunnyside RD carry?

About 18,500 vehicles per day (2023 count), of which roughly 22% are trucks.

How long is I 90 over Bennett Bay;sunnyside RD?

The structure is 1,730 ft (527.3 m) long with a longest span of 520 ft (158.5 m) and a deck 84 ft wide.

Who owns I 90 over Bennett Bay;sunnyside RD?

It is owned by the State Highway Agency.