Overview

Overview

Program overview

All remaining elements of the SR 520 Program from I-5 to Lake Washington are fully funded. These elements, known as the “Rest of the West,” will provide safety and mobility improvements for the region and reconnect local communities divided by the original construction of SR 520 in the 1960s. This map shows the key elements of the Rest of the West, which will be built in phases.

Map of the Rest of the West project showing boundaries for four projects: SR 520/I-5 Express Lanes Construction Project, Portage Bay Bridge and Roanoke Lid Project, Montlake Cut Bascule Bridge Project, and Montlake Project.

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dashed bright blue lineSR 520/I-5 Express Lanes Connection Project
Construction estimated start: 2020
Estimated duration: 3 years
dashed dark blue linePortage Bay Bridge and Roanoke Lid Project
Construction estimated start: 2023
Estimated duration: 6 years
dashed green lineMontlake Cut Bascule Bridge Project
WSDOT will begin additional coordination in 2020 with community stakeholders and agency partners regarding project scope
solid orange lineMontlake Project
Construction start: 2019
Estimated duration: 4‑5 years

Montlake Project

The Montlake Project will improve multimodal transportation for both motorized and nonmotorized travel along the corridor. The project’s key elements are listed here.

West Approach Bridge South

West Approach Bridge South

One of the major elements of the Montlake Project is the West Approach Bridge South, the southern half of a new west approach bridge. This bridge will carry three eastbound lanes to the new floating bridge, including two general-purpose lanes and one transit/HOV lane. WSDOT collaborated closely with community stakeholders and the Seattle Design Commission on the design of the future bridge as part of the recently opened West Approach Bridge North project. The design of the south bridge will be similar to and complement the design of the north bridge.

Rendering showing western segment of the West Approach Bridge South looking north.

1Western segment of the West Approach Bridge South looking north.

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Rendering showing eastern segment of the West Approach Bridge South looking north.

2 Eastern segment of the West Approach Bridge South looking north.

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Reference map showing positions of western and eastern segments of the West Approach Bridge South

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Montlake Lid

Montlake Lid

This project improves the Montlake Boulevard/SR 520 interchange by providing a landscaped lid with open space, direct-access ramps for buses and HOV, and multimodal connections.

Elements include:

  • Landscaped lid with open space.
  • Direct-access ramps for buses and HOV.
  • Transit plaza.
  • Multimodal connections.

Map of the Montlake Lid area showing various features.

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Legend

ABill Dawson Trail tunnel portal

BWest Portal

CPortage Bay Outlook

DSouth Montlake Plaza

ESR 520 Trail/Bill Dawson Trail tunnel portal

FMontlake entry stair

GSouth Transit Shelter

HNorth Transit Shelter

INorth Montlake Plaza

JNeighborhood open space

KEast Portal

LStairs to Shelby-Hamlin neighborhood

Reference map showing position of the Montlake lid in relation to the full Montlake Project.

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Pedestrian Land Bridge

Pedestrian Land Bridge

This project builds a shared-use pedestrian land bridge over SR 520, connecting the Arboretum with East Montlake Park and the University District.

Rendering showing view of pedestrian land bridge looking north.

View of pedestrian land bridge looking north.

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Map of the pedestrian land bridge area showing the positions of various features.

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Elements include

AViewpoint with seating

BEast Lake Washington Boulevard seating area and interpretive element

C14-foot pedestrian path

DMeadow plantings

Reference map showing position of the pedestrian land bridge in relation to the full Montlake Project.

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Concept of pedestrian land bridge cross-section

Illustration showing cross-section of pedestrian land bridge concept.


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