Baltimore City--public Works Department Of, Transportation Maintenance, Watersheds, Pretty Boy Parkton, MD 21120 Phone : (410) 329-6880 Business Category Government Offices-City Village & Twp Government Offices State & Local Government Offices & Public Schools Baltimore City--public Works Department Of, Transportation Bureau Of, Transportation Maintenance, Watersheds, Pretty Boy Parkton, MD 21120 Phone : (410) 329-6880 Business Category Government Offices-City Village & Twp Government Offices State & Local Government Offices & Public Schools