Portland Transportation Center is a bus and train station in Portland, Maine, United States, served and run primarily by Concord Coach Lines and Amtrak Downeaster passenger trains. It is also served by Megabus, as well as the Greater Portland Metro route 1 and BREEZ bus services. The station is open from 4:30 AM to 12:15 AM and from 2:45 AM to 3:15 AM.