The South Station Bus Terminal is a bus station located at South Station in downtown Boston, Massachusetts, United States. It is Boston's main terminal for regional commuter bus and intercity bus service, with 42 bus berths used by 10 operators. The industrial-style structure is built on air rights above the South Station rail platforms. It has two full levels – a bus deck and a rooftop parking deck – plus several partial levels. South Station Bus Terminal is owned by the Massachusetts Bay Transportation Authority (MBTA).