SAN FRANCISCO—Obviously, the massive $2 billion-plus Salesforce Transit Center is one of the largest developments in the Bay Area in the past 50 years, and when complete, will serve tens of thousands of weekday visitors including commuters, area workers, residents and tourists. And, it will be the focal point of the new walkable high-density mixed-use neighborhood that will include more than 4,500 new residences, more than 6 million square feet of new office space and 11 acres of new parks.

The transit center is under construction as part of the $6 billion Transbay project, which is replacing the former Transbay Terminal at First and Mission streets. The new regional transit center will connect eight Bay Area counties and the entire state through 11 transit systems.

Constructed in two phases, the center is slated to open later this year. Phase 1 includes design and construction of the above-grade portion of the transit center, including the 5.4-acre landscaped rooftop park, retail areas and a public art program, among other transportation infrastructure elements.