The Maryland Department of Transport (MDOT) and Amtrak will execute the $4bn project in a phased manner to build two new high-capacity tunnel tubes.
https://www.railway-technology.com/news/amtrak-baltimore-potomac-tunnel/
cover tunnel photo by: Matt Brown from London, England / CC BY
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https://www.railway-technology.com/news/amtrak-baltimore-potomac-tunnel/
Amtrak and MDOT begin Baltimore and Potomac tunnel replacement project
www.railway-technology.comAmtrak and the US state of Maryland have started the Baltimore and Potomac (B&P) Tunnel replacement project after a prolonged delay.