The Long Bridge Project will construct a new, two-track railroad bridge next to the existing Long Bridge, creating a four-track corridor. A new bike-pedestrian bridge also will be constructed as part of the mitigation to National Park Service (NPS) parkland and will span the Potomac River and George Washington Memorial Parkway, connecting Long Bridge Park directly to East and West Potomac Parks.
Freight and passenger rail operators within the project corridor include Amtrak, Virginia Railway Express (VRE) and CSXT. Annually, up to 2 million Amtrak passengers and 3 million VRE commuters traverse the current Long Bridge, which operates at 98% capacity during peak hours. The project’s purpose is to create greater railroad capacity between Virginia and the District of Columbia while alleviating the rail congestion caused by the existing two-track Long Bridge.
1.8
Miles of Rail
7
New Bridges
6.5K
Feet of Rail Bridges
20K
Feet of Track
The Long Bridge is a CSXT owned two-track, century-old bridge that spans the Potomac River in Washington, DC. The Long Bridge Project will increase rail traffic capacity, creating a four-track corridor, and constructing approximately 1.8 miles of improvements including seven rail bridges and pedestrian bridges over land and the Potomac River and related railroad infrastructure between Arlington, VA, and Washington, DC.
Pictured to the right: Rendering of existing Long Bridge and new rail bridge over the Potomac River
Below is a full map of the entire Long Bridge Project, from George Washington Memorial Parkway in Arlington, Virginia, to Maine Avenue in Washington, D.C.
Project Status: Construction
- Increased rail capacity that enables more frequent passenger rail service with better on-time reliability.
- Improved bicycle and pedestrian connectivity between
- Northern Virginia and the District of Columbia with a new bicycle-pedestrian bridge that is wider, brighter, and safer than other options.
- Billions of dollars invested in the regional economy.
- Infrastructure improvements that increase safety and security along the project corridor
Long Bridge North Total Budget: $1.647 B
Long Bridge South Total Budget: $1.013 B
Project Details
Construction Updates
Public Involvement and Community Outreach
DC Community Advisory Group
- March 5, 2025: Meeting Presentation and Video Recording
- June 4, 2025: Meeting Presentation and Video Recording
Arlington-Alexandria Community Advisory Group
- June 3, 2025: Meeting Presentation and Video Recording
- October 9, 2025: Meeting Presentation and Video Recording
Spring 2025: DC Public Outreach (May 7, 2025)
Spring 2023 Public Meeting
Documents and Reports
- Spring 2025 Project Fact Sheet
- Combined Final Environmental Impact Statement/Record of Decision and Final Section 4(f) Evaluation – 3MB (PDF)
- FEIS Basis of Design Report – 43MB (PDF)
- FEIS Operator Comments – 190KB (PDF)
- FEIS Operator Signoff Plans – 18MB (PDF)
- Final Environmental Impact Statement/Record of Decision – 3MB (PDF)
- Frequently Asked Questions (FAQs)
- Spring 2023 Public Meeting
Fact Sheets and Project Materials
Construction Partners
Long Bridge – DC
The Progressive Design-Build contractor is Skanska/Flatiron Joint Venture (JV).
JMT and HNTB are Joint Venture partners.
Major Subcontractors include:
Long Bridge – Potomac River Bridges
The Design-Build contractor is a Joint Venture (JV) comprised of Trumbull Corp., Fay S&B Construction, and Wagman Heavy Civil, Inc., aka Long Bridge Rail Partners.
Traffic Impacts
- View the latest travel impacts on the construction disruptions map to better plan your trip!
- Starting August 29: Traffic Pattern Change – Maine Avenue SW to be reduced to two lanes: The right lane on westbound Maine Avenue SW will be closed to through traffic through Spring 2026.
- Starting August 28: Traffic Pattern Change – Maine Avenue SW Access Road to the 14th Street: The westbound Maine Avenue SW access road to northbound 14th Street SW will be closed to through traffic until 2030.
- On-street parking in this area will be unavailable.
- Access to the 1331 Maryland Avenue parking garage and loading dock will be maintained. A portion of the access road will be temporarily converted into a local two-way street, where motorists can enter from D Street SW.
- Motorists on Maine Avenue westbound must detour to 12th Street or 15th Street SW / Raoul Wallenberg Place to access northbound 14th Street and Independence Avenue SW.
For more details, view:
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Email: [email protected]
Phone Number: 202-769-1808
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