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Maryland Transit Administration- Purple Line Construction Project

Division: Park Development

map of purple line prpject outlining stations from Greenbelt, to bethesda.Purple Line text


The Purple Line Project is a 16-mile, 21-station light rail transit line that will connect several communities in Maryland. The project when complete will connect Bethesda in Montgomery County to New Carrollton in Prince George’s County.  The corridor is located along the Capital Beltway near Washington, D.C., in a densely populated area with continued commercial, institutional, mixed-use, and residential development.  The Project will include five major activity center stations (Bethesda, Silver Spring, Takoma-Langley Park, College Park, and New Carrollton) and 16 smaller stations that serve residential communities, commercial districts, and institutional establishments.  It will also provide direct connections to three branches of the existing Metrorail system, all three MARC commuter rail lines, and Amtrak’s Northeast Corridor line.  Although the Project will provide direct connections with Metrorail and MARC, it will remain physically and operationally separate.


The Maryland Transit Administration (MTA) is leading this project, with the support and close coordination of a team that includes the Washington Metropolitan Area Transit Authority, Montgomery and Prince George’s counties, The Maryland-National Capital Park and Planning Commission, State Highway Administration, and local municipalities in the project area.

Parks in Montgomery County that are scheduled to be impacted include:

  • Elm Street Urban Park
  • Ken-Gar Palisades Local Park- Wetland Mitigation Project
  • Rock Creek Stream Valley Park
    • Rock Creek Hiker-Biker Trail
  • Sligo Cabin Neighborhood Park
  • Sligo Stream Valley Park
    • Sligo Creek Trail
  • Long Branch Stream Valley Park
    • Long Branch Trail
  • New Hampshire Avenue Estates

Status/Project Update

The project was approved in late 2016. The initial groundbreaking for the Purple Line began on August 28, 2017.  Work is currently on schedule to be complete and system operational by 2022. Click here to see the PurpleLine Transit Construction Webpage.

Follow the project as it winds its’ way from Greenbelt to Bethesda. Keep up to date with the latest parks impacted by the project and the overall project. To get updates, sign up for the Purple Line e-newsletters to get the latest construction information.

Additional Information


For questions and comments about the Purple Line project, please contact: Purple Line Construction Information and Concerns  at (240) 424-5325 or

To get updates, sign up for the Purple Line e-newsletters to get the latest construction information.

Last Updated: June 9, 2022