US Bridges

Westbound I-90 over S Transit RR Lakeview a

Good

King County, Washington · 1.5 E JCT I-5 · Structure no. 0013168A0000000

Built
1989
36 years old
Condition
Good
inspected April 2023
Type
Slab
Concrete Continuous
Length
269 ft
7 main spans
Daily traffic
68,544
2023 count
Owner
State
State Highway Agency

About this bridge

Westbound I-90 over S Transit RR Lakeview a is a concrete continuous slab carrying Westbound I-90 over S Transit RR Lakeview a in King County, Washington. It was built in 1989, so it is 36 years old, younger than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 68,544 vehicles a day, roughly 3% of them trucks, projected to reach 104,170 by 2039. The structure is 269 ft (82 m) long and 55 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesWestbound I-90
CrossesS Transit RR Lakeview a
Location1.5 E JCT I-5
RouteInterstate 90
CountyKing County
StateWashington
Coordinates47.59042, -122.28858
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating89.3 US tons
Inventory rating52.5 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans7
Design loadHS 20 + Mod
Structure length269 ft (82 m)
Longest span84 ft (25.6 m)
Deck width55 ft (16.8 m)
Roadway width52 ft (15.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic68,544 (2023)
Projected traffic104,170 by 2039
Trucks3%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.7 mi (6 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 statusEligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$6.9 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Westbound I-90 over S Transit RR Lakeview a built?

It was built in 1989, making it 36 years old in 2025.

What condition is Westbound I-90 over S Transit RR Lakeview a in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in April 2023.

How much traffic does Westbound I-90 over S Transit RR Lakeview a carry?

About 68,544 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Westbound I-90 over S Transit RR Lakeview a?

The structure is 269 ft (82 m) long with a longest span of 84 ft (25.6 m) and a deck 55 ft wide.

Who owns Westbound I-90 over S Transit RR Lakeview a?

It is owned by the State Highway Agency.