Army Corps Recommends $77M Floodwall to Protect Baltimore Tunnels

In the face of growing flooding risk and increased traffic following the Francis Scott Key Bridge collapse, federal and state officials say protecting two of Baltimore's major transportation corridors from flooding is vital.

1 minute read

September 3, 2024, 5:00 AM PDT

By Mary Hammon @marykhammon


Aerial view of an eight-lane highway tunnel with the harbor in the background.

The Fort McHenry Tunnel on I95 through Baltimore is used by approximately 45 million vehicles per year. | tamas / Adobe Stock

To help manage the risk of coastal flooding from rising sea levels and worsening storms, the U.S. Army Corps of Engineers has recommended building $77 million and 9,500 feet of floodwalls to protect Baltimore’s I-95 Fort McHenry and I-895 Harbor tunnels, two of the city’s major traffic thoroughfares, according to an article from the Baltimore Banner. “The plan comes after USACE and the Maryland Department of Transportation completed a three-year study into coastal flooding problems around Baltimore and potential solutions” and as motorists are using the tunnels as alternative routes following the collapse of the Francis Scott Key Bridge in March, reports Penelope Blackwell. 

“It is very important to make sure these critical transportation routes remain open during a coastal storm event, maintaining access to jobs, commercial transportation routes and emergency services,” Joe Bieberich, the project manager for the storm risk study, said in the release.

According to the Baltimore Banner article, the Army Corps and the Maryland Transportation Authority are set to begin design work on the floodwalls later this year, with construction expected to start in 2027, pending congressional authorization and funding.

Tuesday, August 13, 2024 in The Baltimore Banner

portrait of professional woman

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching. Mary G., Urban Planner

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching.

Mary G., Urban Planner

Cover CM Credits, Earn Certificates, Push Your Career Forward

Logo for Planetizen Federal Action Tracker with black and white image of U.S. Capitol with water ripple overlay.

Planetizen Federal Action Tracker

A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.

July 2, 2025 - Diana Ionescu

Aerial view of town of Wailuku in Maui, Hawaii with mountains in background against cloudy sunset sky.

Maui's Vacation Rental Debate Turns Ugly

Verbal attacks, misinformation campaigns and fistfights plague a high-stakes debate to convert thousands of vacation rentals into long-term housing.

July 1, 2025 - Honolulu Civil Beat

Former New York Governor Andrew Cuomo walking down city street.

Cuomo Is the Candidate of Both NIMBYs and Developers. What Gives?

In the New York City mayoral race, odd bedfellows align to preserve the housing status quo.

June 23, 2025 - Benjamin Schneider

Large spinning swing ride at Chicago's Navy Pier.

The Subversive Car-Free Guide to Trump's Great American Road Trip

Car-free ways to access Chicagoland’s best tourist attractions.

5 seconds ago - Streetsblog Chicago

Aerial view of downtown San Antonio, Texas at night with rotating Tower of the Americas in foreground.

San Antonio and Austin are Fusing Into one Massive Megaregion

The region spanning the two central Texas cities is growing fast, posing challenges for local infrastructure and water supplies.

1 hour ago - Governing

Large building under construnction in downtown Charlottesville, Virginia at sunset.

Charlottesville Temporarily Has No Zoning Code

A judge ordered the Virginia city to throw out its newly revised zoning code, leaving permitting for new development in legal limbo.

2 hours ago - Charlottesville Tomorrow