Braintree, located at Ivory and Union Streets in Braintree, Massachusetts, is the southernmost station on the Massachusetts Bay Transportation Authority's Red Line. It also is a stop on the MBTA Commuter Rail Old Colony Lines. While the tracks of the Red Line and commuter rail lines are all parallel to one another, their platforms are offset; the commuter rail platform is located north of Union Street while the Red Line platform is south of the street.