In 1980, Sea-Land ended its exclusive lease, and the first container port was enlarged and made available for other shipping companies.

[14] Massport also operates Logan Express bus service between all terminals and park-and-ride lots in Braintree (near South Shore Plaza), Framingham (Shopper's World), Woburn (Anderson Regional Transportation Center), and Peabody (164 Newbury Street).

[18] Massport provides financial assistance to the MBTA for operation of the Silver Line Bus Rapid Transit service to Logan terminals from downtown Boston, and contributes to the maintenance of Airport Station and ventilation of the Ted Williams Tunnel.

[21] The Massachusetts Port Authority maintains its police force of sworn law enforcement officers.

They work in seamless partnership with the Massachusetts State Police—Troop F who also provide law enforcement services for Massport.

Massport police officers, also known as port officers, are responsible for physical security and law enforcement at the marine terminals, Boston's Seaport District, East Boston parks and various other properties and lands owned by the authority.

The Massport Police Department is also responsible for the safety and security of the passengers and vessels that call on the Port of Boston through the Flynn Cruise Port and Paul W. Conley Cargo Container Terminal, in adherence with federal regulations and law enforcement requirements set forth by the Maritime Transportation Security Act of 2002.