Streets and Highways

DelDOT uses street sweeping as a tool to decrease litter, debris, and sediment that can clog storm drains and be carried into a nearby waterbodies. DelDOT conducts a targeted street sweeping approach that includes the following:

• Interstates, expressways, and principal arterials are swept at a minimum of four times per year.
• Major and minor collector roads are swept at a minimum of twice per year.
• Local roads are swept at a minimum of once per year.

Sweeper vehicles are equipped with automatic vehicle location (AVL) devices to help verify that the required sweeping frequency has been met.