The Streets & Drainage Division of the Public Works Department strives to maintain the best possible road infrastructure for Portland. This is accomplished through maintenance of streets and sidewalks, and traffic signs and signals, as well as trimming trees that may adversely impact pedestrian or vehicle traffic.
The division is also responsible for maintaining and improving the city's water and wastewater infrastructure, as well as administering the City's mosquito control program. Responsibility for maintaining and serving all City of Portland vehicles falls to the Streets & Drainage Division.