Boston's Red Line: Bridging the Charles from Alewife to Braintree

When the Boston Elevated Railway Company broke ground for the Cambridge Subway in May 1909, its intention was to provide the cities of Boston and Cambridge with the finest and most efficient rapid-transit system of the time. Other cities, such as New York and Philadelphia, paid close attention, adopting many of the Cambridge Subway's revolutionary design features. The subway became known as the Red Line and eventually extended from Cambridge across the Charles River through Boston, serving ...