The Official Website of The Massachusetts Department of Transportation

National Highway System

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The National Highway System (NHS) is a network of nationally significant highways selected by the state and Metropolitan Planning Organizations and approved by Congress to ensure continuity across state lines and connection with other priority transportation networks. It includes the Interstate System, Strategic Defense Highway System, other principal arterials, and connectors to major intermodal terminals. The roadways are color-coded according to subcategories of the NHS and also depict all other non-NHS arterials and collectors for reference.

Other Features Included

  • Municipal boundaries
  • Year Round Ferry lines
  • Railroads
  • MassDOT Highway District boundaries
  • Municipal boundaries
  • Ponds and streams

Geographic Areas Available (PDF Downloads)

  • Statewide (3.61 MB) 
  • MassDOT Highway District One (1.94 MB), Two (2.65 MB), Three (3.30 MB), Four (3.10 MB), Five (3.65 MB), Six (3.34 MB) 
  • Town – Available by request

Data Source

  • Road Inventory Year-end File - 2013


For a more detailed view of the road network, try our Road Inventory Interactive Map.


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