Seattle Freeway Lid Idea Moves Forward

A campaign to lid Interstate 5 is gaining steam. Proponents are envisioning central Seattle before the freeway ran through it.

1 minute read

November 12, 2018, 10:00 AM PST

By Camille Fink


Seattle

SEASTOCK / Shutterstock

A proposal to build a freeway lid over Interstate 5 in central Seattle is gaining political support, with a number of city councilmembers and state representatives backing the idea. In October, a volunteer collaboration released conceptual designs for the Lid I-5 campaign, reports Natalie Bicknell:

Offering sophisticated glimpses into the potential future uses of the freeway lid, the conceptual designs showcase amenities such as open space, affordable housing, increased pedestrian and bicycle connections, public schools, and different scales of commercial development that could all be incorporated into the downtown core with the construction of a freeway lid covering the currently vacant space above the I-5 corridor.

A feasibility study is next on the agenda. The Office of Planning and Community Development received $1.5 million to fund the study, which will identify opportunities from lidding the freeway trench, such as expansion of utilities and development of green infrastructure.

“The City needs to think of bigger and more ambitious solutions for climate change, including increasing urban density and green infrastructure, both of which would facilitated by lidding I-5,” says Bicknell.

Monday, November 5, 2018 in The Urbanist

portrait of professional woman

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching. Mary G., Urban Planner

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching.

Mary G., Urban Planner

Cover CM Credits, Earn Certificates, Push Your Career Forward

Logo for Planetizen Federal Action Tracker with black and white image of U.S. Capitol with water ripple overlay.

Planetizen Federal Action Tracker

A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.

June 4, 2025 - Diana Ionescu

Metrorail train pulling into newly opened subterranean station in Washington, D.C. with crowd on platform taking photos.

Congressman Proposes Bill to Rename DC Metro “Trump Train”

The Make Autorail Great Again Act would withhold federal funding to the system until the Washington Metropolitan Area Transit Authority (WMATA), rebrands as the Washington Metropolitan Authority for Greater Access (WMAGA).

June 2, 2025 - The Hill

White and yellow DART light rail train in Dallas, Texas with brick building in background.

DARTSpace Platform Streamlines Dallas TOD Application Process

The Dallas transit agency hopes a shorter permitting timeline will boost transit-oriented development around rail stations.

May 28, 2025 - Mass Transit

Aerial view of large complex of apartment buildings surrounded by fall foliage trees in suburban Dallas, Texas.

Renters Now Outnumber Homeowners in Over 200 US Suburbs

High housing costs in city centers and the new-found flexibility offered by remote work are pushing more renters to suburban areas.

June 6 - Point2

Yellow single-seat Japanese electric vehicle drivign down road.

The Tiny, Adorable $7,000 Car Turning Japan Onto EVs

The single seat Mibot charges from a regular plug as quickly as an iPad, and is about half the price of an average EV.

June 6 - PC Magazine

Worker in hard hat stands in front of oil pipeline under construction with yellow heavy equipment.

Supreme Court Ruling in Pipeline Case Guts Federal Environmental Law

The decision limits the scope of a federal law that mandates extensive environmental impact reviews of energy, infrastructure, and transportation projects.

June 5 - NPR

Urban Design for Planners 1: Software Tools

This six-course series explores essential urban design concepts using open source software and equips planners with the tools they need to participate fully in the urban design process.

Planning for Universal Design

Learn the tools for implementing Universal Design in planning regulations.