It's also important to note that the B&P tunnel is used mostly for passenger cars. Freight cars already go through the Howard Street Tunnel, which is also currently in the process of undergoing an expansion.

All of these concerns are based sorely in fear and because they don't understand the engineering behind it. These issues will all be heavily discussed and worked through as the project goes through design. They will install a heavy monitoring system during construction and have a number of stakeholder meetings.