Transportation Department 3050 Churchville Rd Churchville, MD 21028 Phone : (410) 838-7788 Business Category Port Authorities Maryland State Government--transportation Department Of, State Highway Administration, Maintenance Engineers 3050 Churchville Rd Bel Air, MD 21014 Phone : (410) 838-7788 Business Category Government Offices-State Government Offices State & Local Government Offices & Public Schools