I-495 and I-270 Managed Lanes Study

At various stages of the project, the M-NCPPC, through its Montgomery County Planning Department, Montgomery County Department of Parks, Prince George’s County Planning Department and Prince George’s County Department of Parks and Recreation, will review study process, analysis, and any potential environmental and community impacts of alternatives proposed to address congestion within the specific study area. In accordance with the National Environmental Policy Act (NEPA), the Maryland Department of Transportation, State Highway Administration (MDOT SHA) released its Recommended Preferred Alternative (RPA) on January 27, 2021.  

MDOT SHA announced their RPA for the Capital Beltway and Interstate 270 expansion, which would add four total high-occupancy toll lanes—two HOT managed lanes in each direction of I-495 from south of the George Washington Memorial Parkway in Virginia across the American Legion Bridge to west of MD 5, and on I-270 from I-495 to north of I-370.  On I-270 the alternative would add one HOT lane and convert the highway’s existing HOV lane, which serves as a free lane except at peak travel times for three hours each day into a HOT lane, resulting in a network of two managed HOT lanes in each direction 

MDOT SHA is currently preparing the Final Environmental Impact Statement (FEIS) for publication in October 2021, and the Record of Decision (ROD) for publication in November 2021.  The M-NCPPC is in the process of reviewing the details of the RPA in anticipation of responding to both the FEIS and the ROD for alignment with NEPA requirements and best practices. Its findings will be issued to the public as soon as they are available.

Last Updated: February 5, 2021