$16 billion is the estimated cost to build the new rail tunnel under the Hudson River. Decades of delays and funding spats ultimately led to the creation of the Gateway Development Commission, the bi-state entity responsible for making the tunnel a reality. Joining the podcast is Alicia Glen, co-Chair of the Gateway Development Commission, founder and managing principal of MSquared, and current CBC Trustee. Glen is also the chair of the Trust for Governors Island, and the former Deputy Mayor for Housing and Economic Development during the de Blasio Administration.