The ASL was the second-longest trolley line in Maine, encompassing over 87 miles (140 km) of track.
A charter for the Atlantic Shore Line Electric Railroad was first issued in March 1893 by the Maine legislature.
The charter allowed for the building of an electric railroad from Biddeford, through the towns of Kennebunkport and Wells, to York Beach.
[5] 4 miles (6 km) of the ASL right-of-way between Town House Square and Biddeford off Log Cabin Road in Kennebunkport have been preserved by the Seashore Trolley Museum.
The museum has also completed the restoration of electric locomotive ASL #100, the only remaining original piece of rolling stock[6] from the Atlantic Shore Line Railway system.