Transportation in Boston includes roadway, subway, regional rail, air, and sea options for passenger and freight transit in Boston, Massachusetts. The Massachusetts Port Authority (Massport) operates the Port of Boston, which includes a container shipping facility in South Boston, and Logan International Airport, in East Boston. The Massachusetts Bay Transportation Authority (MBTA) operates bus, subway, short-distance rail, and water ferry passenger services throughout the city and region. Amtrak operates passenger rail service to and from major Northeastern cities, and a major bus terminal at South Station is served by varied intercity bus companies. The city is bisected by major highways I-90 and I-93, the intersection of which has undergone a major renovation, nicknamed the Big Dig.