The CEO of The Boring Company, Elon Musk, had a 30 minute phone interview with Miami Florida Mayor Francis Suarez.
Suarez has been the Mayor for five years after serving, since 2009, as the City Commissioner until 2017 when he became Mayor.
Suarez’ background is extensive in transportation:
Suarez also serves as Vice-Chair of the Miami-Dade Transportation Planning Organization (TPO) and is the former President of the Miami-Dade County League of Cities. In his role at the TPO, Suarez championed the Strategic Miami Area Rapid Transit (SMART) Plan, which was unanimously approved. The SMART Plan expands mass transit options in Miami-Dade County through six main corridors and new bus routes. — Wikipedia
The city of Miami is known to have traffic congestion issues. The hope here is to build a tunnel to help relieve such issues and also move towards a very green future.
To address if it is possible to build at sea level, yes it is as Miami already has a tunnel built at and below sea level, The Port Miami Tunnel, Wikipedia.
The tunnel is 4,200 feet long with the deepest depth at 120 feet below sea level. The tunnel roughly took two years to complete.
The new tunnel project is rumored to supposedly be 30 million where costs are low due to the tunnel’s intentional design of EV only vehicles so no need for expensive extra ventilation engineering. Miami Dade, county area of Miami, transit officials in 2018 priced the tunnels that consider CO2 ventilation measures, to cost 900 million. An interview with theMiami Herald, after a call with Musk Friday, February 6th, Suarez stated that the CEO said TBC may be able to build the tunnel in under 6 months. The tunnel would run from Brickell Avenue, the Downtown financial area of Miami, to Biscayne Boulevard. Saurez stated he will be reaching out to the Florida Governor.
Currently, according to the company’s website The Boring Company is actively working on four big projects in North America. Las Vegas, Hawthorn, Los Angeles, and the East Coast. The Las Vegas project alone is quite extensive with many Resorts contracting to have a tunnel made to their resort on top of the already large Vegas Loop and smaller connected LVCC, Las Vegas Convention Center, Loop.
The Miami Tunnel has not yet been added to TBC website as an official project.