Chicago has one of the most extensive infrastructures of any city in the world, with approximately 1,900 miles of public alleys, that’s about 3,500 acres of paved impermeable surface. The city is committed to creating a greener, more sustainable environment by using best management practices in alley improvement and construction. Called ‘Green Alleys’, under the management of Chicago’s Department of Transportation (CDOT), it aims to stop polluted rainwater in the city’s alleyways from ending up in adjacent Lake Michigan. (more…)