Baltimore and Potomac Tunnel

A blue and white train emerges from the Baltimore and Potomac Tunnel.

Amtrak’s $6 billion tunnel project moves closer to a faster Northeast Corridor

The Baltimore & Potomac Tunnel Replacement Program is Amtrak's largest-ever single infrastructure investment, and will pave the way for more reliable passenger rail service between Baltimore, Washington and Virginia.

September 13, 2026 - Daily Commercial News and Construction Record

View into gray stone train tunnel with visible opening on other side

Creating a Meaningful Community Input Process in Baltimore

Seeking to avoid the mistakes of the past, the city undertook a robust community engagement process when planning the reconstruction of the Baltimore & Potomac Tunnel.

February 14, 2023 - Next City

Amtrak Acela

Maryland Looks to Replace Reconstruction-Era Train Tunnel

The 148-year old tunnel, which slows trains to 30 miles per hour, is the biggest bottleneck between Washington, D.C. and New Jersey.

June 30, 2021 - The Washington Post

FREE Course: Walkable City 1: Why Walkability?

After describing his path towards focusing on walkability as the essence of good planning, Jeff Speck marches through his five principal reasons for making more walkable places.

Reinventing Malls: Planning Alchemy—Turning Gray Fields Into Gold

The course focuses on the opportunities and imperatives that shape reinvention of mall sites.

Top Books

An annual review of books related to planning.

Top Schools

The definitive ranking of graduate planning programs.

100 Most Influential Urbanists

The who's who of urbanism, according to Planetizen readers.

Urban Planning Creators You Should Know

A short list of voices on social, video, and podcasting platforms.