The Virginia Passenger Rail Authority (VPRA) proposes to implement the Northern Virginia Core Capacity project to construct a new dedicated two-track bridge over the Potomac River, along with 6 miles of new fourth railroad track and related improvements along the existing RF&P rail corridor, between Alexandria, Virginia and Washington, D.C. The proposed project also includes service expansion from two to three trains per hour during both the AM and PM peaks, new train storage tracks, and purchase of up to three additional trainsets.