Any roadway that is numbered, such as 355 or 28, is considered a State road and therefore requires a State permit to perform any work in the right of way. The District 3 Office is located at 9300 Kenilworth Avenue, Greenbelt, Maryland 20770, and handles lower Montgomery County.

Contact the Maryland State Highway Administration (SHA) at: 301.513.7300 or 800.749.0737 for further assistance; or see web site below. Use the search box provided.