The State Highway Grid Map series cover all interstate, US, and state highways; county, local and municipal roads, other transportation systems such as air and seaports; reservations and other public lands; political boundaries, drainage and streams, large open bodies of water and some public buildings at a scale of 1:12,000.
The Grid Maps are updated annually and available as PDF files. To view, print or download PDF files, you must have Adobe Reader installed on your computer.
To find a Grid Map you can either search by Grid Map number or address in the "Grid/Address Search" search window. Upon locating your desired Grid Map, please click on that location on the map. This will then open a pop-up window, identifying the Grid Map you've selected. Selecting the arrow pointing to the right opens a window with a hyperlink entitled Printable Map . Click this hyperlink to open the map in your browser for either viewing, printing or download.
Please Note: The Grid Maps range in file size from approximately .5MB to 14MB.
To purchase a hard copy of a Grid Map, click here.
707 North Calvert Street
Baltimore, Maryland 21202-3601
Main Business Line – 410-545-0300
Safety Campaigns – 1-800-323-6742
For emergencies, call MDOT SHA's Statewide Operations Center at 410-582-5650.
Frequently Asked Questions
Public Information Act