This division is responsible for the street and drainage system, construction and maintenance projects and assists in the maintenance of the City’s lakes and environmental programs. The infrastructure inventory consists of roughly 667 miles of paved City streets and alleys, over 250 miles of sidewalks, as well as a City-wide storm drainage system that includes approximately 160 miles of underground storm sewer pipe, over 60 miles of ditches, approximately 8,000 storm inlets, 170 detention/retention ponds, 419 outfall structures, and 10 City-maintained lakes.