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Flood proofing and smog-eating streets in Chicago

Last updated: Sep 7, 2023

Summary

While tackling flooding and water pollution issues, the new pavement projects implemented by the city of Chicago provide multiple additional benefits, for health, the environmental and the social quality of life.

Problem

With 65% of open space being paved, heavy rainfall in the city of Chicago exacerbates the issues of flooding and water pollution.

Solution

The city has thus decided to address these issues with a range of new pavement projects. Some alleys and sidewalks are paved with a permeable surface, which are composed of 30% recycled content. Others use photocatalytic cement which ‘eats’ air pollutants through a chemical process.

Outcome

Besides tackling the flooding and water pollution issue, these projects are contributing to the reduction of air pollution, the heat-island effect and waste production. In addition, such projects improve walking and biking facilities.