Permeable Pavement Holds Promise, And Some Doubts

Chicago is keen to use porous asphalt and paving for new transportation projects, touting its environmental benefits, but questions remain about its long term effectiveness -- including its ability to withstand Chicago winters.

1 minute read

February 1, 2007, 8:00 AM PST

By Christian Madera @http://www.twitter.com/cpmadera


"Used in Europe for decades, so-called permeable pavement allows rainwater to pass through instead of running off into rivers or lakes. Made of either porous asphalt and concrete or paving stones shaped to leave gaps at the corners, the surfaces are just starting to catch on in the area as part of the movement toward "green building," which seeks to lessen the environmental impact of development."

"Some questions remain about whether the pavement will become clogged over time and how well it will stand up to northern freezes, but environmentalists are generally enthusiastic."

"Chicago has used permeable pavement as part of a 'green alleys' program and plans to use it in streets in the next year or two, said Department of Transportation spokesman Brian Steele."

Wednesday, January 31, 2007 in The Chicago Tribune

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

Get top-rated, practical training

Aerial view of single-family homes with swimming pools in San Diego, California.

San Diego to Rescind Multi-Unit ADU Rule

The city wants to close a loophole that allowed developers to build apartment buildings on single-family lots as ADUs.

March 9, 2025 - Axios

Canadian flag in foreground with blurred Canadian Parliament building in background in Ottawa, Ontario, Canada.

Has President Trump Met His Match?

Doug Ford, the no-nonsense premier of Canada's most populous province, Ontario, is taking on Trump where it hurts — making American energy more expensive.

March 11, 2025 - Toronto Star

Close-up of green ULEZ sign in London, UK.

Study: London ULEZ Rapidly Cleaning up Air Pollution

Expanding the city’s ultra low-emission zone has resulted in dramatic drops in particle emissions in inner and outer London.

March 10, 2025 - Smart Cities World

Cyclists and a red T train on the Longfellow Bridge in Boston, MA at sunset.

What the Proposed Federal Budget Means for Transit, Rail

The proposed FY 2025 budget keeps spending for public transit and passenger rail essentially the same as in 2024.

16 minutes ago - American Public Transportation Association

Aerial view of freeway in Orlando, Florida with construction work.

Disconnecting Communities: Measuring the Social Impacts of Freeways

Research from 50 major U.S. cities shows social connections are weakest in neighborhoods where highways are present.

2 hours ago - Next City

Tents set up by unhoused people under freeway overpass in San Jose, California with American flag above them.

San Jose Mayor Takes Dual Approach to Unsheltered Homeless Population

In a commentary published in The Mercury News, Mayor Matt Mahan describes a shelter and law enforcement approach to ending targeted homeless encampments within Northern California's largest city.

March 14 - The Mercury News

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.