Maryland Transportation Authority approves $17B plan to replace Chesapeake Bay Bridge

The approved Alternative C proposal would double capacity with two four-lane spans and expand U.S. Route 50/301
Dec. 19, 2025
2 min read

Key Takeaways

  • MDTA unanimously approved Alternative C, a $17 billion plan to replace the Chesapeake Bay Bridge with two four-lane spans.
  • The project would double bridge capacity, expand U.S. Route 50/301 and improve safety and emergency access.
  • Design could begin in 2028, with construction starting in 2032, pending federal approval and funding.

Members of the Maryland Transportation Authority (MDTA) voted unanimously to approve a plan to construct two four-lane bridges to replace the existing Chesapeake Bay Bridge.

The plan, known as “Alternative C,” was selected from seven proposals developed as part of a study that began in 2022. The options was chosen because it was deemed the most cost-effective, had the least environmental and community impact and improved safety, according to WTOP News.  

Cost and capacity expansion

According to Fox 45 News, the proposal carries a price tag of more than $17 billion, making it the least expensive option presented, in part because it utilizes existing travel lanes on U.S. Route 50/301.

The project would double the Bay Bridge’s current capacity, WTOP News reported, and includes expanding U.S. Route 50/301 to eight lanes from west of Oceanic Drive to east of Cox Creek to support traffic transitions to the new bridges. The new bridge crossing would also feature wider lanes and expanded shoulders, improving access for emergency vehicles.

Construction timeline and design details

Construction would begin with an eastbound bridge built south of the existing structure, followed by the demolition of the current eastbound span. A new westbound bridge would then be constructed between the existing bridge spans. The full project is expected to take several years, according to Fox 45 News.

The new bridge crossing would be raised to 230 feet above the water, matching the height of the incoming Key Bridge, allowing larger ships access to the Port of Baltimore, WTOP News reported.

Funding, approvals and next steps

A shared bicycle and pedestrian path was not included in the approved plan, though the board will continue evaluating its feasibility. Adding the path would increase project costs by approximately $1 billion, according to WTOP News.  

If the project moves forward as planned, design could begin in 2028, and construction starting in 2032, Public hearings are scheduled for February, WTOP News reported.

The project will require federal approval and will likely require federal funds to move forward, Fox 45 News reported. 

Sources: WTOP News, Fox 45 News 

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