Here’s how the South Station air-rights tower will impact your commute

The development team behind the air-rights tower coming to South Station and the Massachusetts Bay Transportation Authority late Friday outlined how the mammoth mixed-use project will impact commuters who use the major transit hub. The 2.75-million-square-foot project is expected to be constructed over three phases and last 54 months, or four and a half years. Starting this July, both the MBTA and the project’s development team advise riders on Amtrak and the MBTA Commuter Rail, Red Line and Silver…