The city of Boston, Massachusetts, boasts the entire range of transportation options. The Boston transportation system inclues roadway, rail, air, and sea options for passenger and freight transit. 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 from the downtown to Portland, Maine, Springfield, Massachusetts, Hartford, Connecticut, and New York City. 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 recently undergone a major renovation, nicknamed the Big Dig. Boston also boasts an extensive network of secondary highways, parkways, and local roads.