The Charlestown Elevated was a segment of the MBTA Orange Line rapid transit line that ran from the Canal Street Incline in downtown Boston, Massachusetts through Charlestown to a terminal in Everett, Massachusetts. It opened in June 1901 and was replaced by the Haymarket North Extension in April 1975.

Route

The Charlestown Elevated began at the Canal Street Incline, just north of Haymarket Square in the Bulfinch Triangle section of downtown Boston, Massachusetts. It paralleled the Causeway Street Elevated north to North Station just south of Boston Garden. There it turned east along Causeway Street to Tower C, the split with the Atlantic Avenue Elevated, then north over the Charlestown Bridge.

The Elevated turned slightly with an elevated station at City Square, then followed Main Street through Charlestown with a station at Thompson Square. Sullivan Square, the original terminal, was a grand arched brick building with multiple streetcar loops. The Sullivan Square Shops, one of the line's two maintenance facilities, was located just north of Sullivan Square. From there, the line turned northeast and crossed the Mystic River on a high bridge, then slowly descended to the ground-level Everett station.