Bellevue, Washington Could Put a 'Lid' on its Freeway

The idea is still very preliminary, but the city of Bellevue, Washington is circulating a plan that could create a freeway cap park spanning the I-405 freeway as a component of a new bike and pedestrian path.

2 minute read

August 24, 2017, 9:00 AM PDT

By James Brasuell @CasualBrasuell


Freeway Cap Park

Conceptual rendering of the I-405 lid park. / Grand Connection Framework Plan

"The City of Bellevue [Washington] is in the early stages of charting future development that could include a 'lid' connecting two areas of the community that are now divided by Interstate 405," reports Michele Chandler.

The lid, or freeway cap park, is one of three options for spanning I-405 as part of the proposed Grand Connection, a "1.5-mile pedestrian and bicycle path would wind from Meydenbauer Bay Park at Lake Washington, connect through the downtown core and ultimately terminate at the regional multi-use Eastside Rail Corridor."

Other options for spanning I-405 include a sculptural bridge and a stand-alone bridge. The Grand Connection Framework Plan, made public in June 2017, is careful to note that the Framework Plan would not constitute a decision regarding any those options. The I-405 crossing will, however, "be evaluated as part of the Wilburton Commercial Area Environmental Impact Statement," writes Chandler. That planning effort is a two-phase project, including the Grand Connection urban design work and land use and transportation plan for the Wilburton commercial area. "The city will release a draft Environmental Impact Survey for the Wilburton commercial area and the I-405 crossing segment in late September," adds Chandler.

Still, the I-4-5 lid is likely to remain a hot topic. The lid idea is not the only such idea in the region. Seattle residents and designers proposed the Seattle C.A.P. Park for I-5 in that city's downtown in late 2015. Several other major cities around the country have freeway cap parks at various levels of concept, design, and planning, including Philadelphia, Pittsburgh, Atlanta, Dallas, and Denver.

Wednesday, August 23, 2017 in The Registry

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 11, 2025 - Diana Ionescu

Rendering of Shirley Chisholm Village four-story housing development with person biking in front.

San Francisco's School District Spent $105M To Build Affordable Housing for Teachers — And That's Just the Beginning

SFUSD joins a growing list of school districts using their land holdings to address housing affordability challenges faced by their own employees.

June 8, 2025 - Fast Company

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, 2025 - PC Magazine

White Waymo autonomous car driving fast down city street with blurred background at night.

Seattle's Plan for Adopting Driverless Cars

Equity, safety, accessibility and affordability are front of mind as the city prepares for robotaxis and other autonomous vehicles.

June 16 - Smart Cities Dive

Two small wooden one-story homes in Florida with floodwaters at their doors.

As Trump Phases Out FEMA, Is It Time to Flee the Floodplains?

With less federal funding available for disaster relief efforts, the need to relocate at-risk communities is more urgent than ever.

June 16 - Governing

People riding bicycles on separated bike trail.

With Protected Lanes, 460% More People Commute by Bike

For those needing more ammo, more data proving what we already knew is here.

June 16 - UNM News