A rooftop park could be ready above a new downtown transit center 10 months before bus operations begin.
Transbay Joint Powers Authority staff working on a $1.6 billion project to tear down and replace the Transbay Transit Center at First and Mission streets published key construction dates related to the 7-year project.
The existing terminal is expected to be vacated, with bus stops shifted nearby to a temporary terminal, by August. That will allow demolition of the aging building to begin.
Excavation of an area that will be used as a subterranean train terminal — although no train lines presently reach the site and funding has not yet been identified to extend rail from Fourth and King streets — is expected to be completed by July 2013, staff told commissioners during a hearing on Thursday.
Below-grade construction is scheduled to finish by June 2014 and the shell of the new above-ground bus terminal with retail and gathering spaces is expected to be ready by August 2015.
A massive rooftop park is planned to be built on top of the structure by October 2016.
Bus operations could begin by August 2017, allowing the temporary terminal to be shuttered and redeveloped.