The EJBSP&PS was chartered in 1880 and built a standard gauge railway line from the Eastern Railroad near Crescent Beach southeast via Beachmont and Winthrop Beach to Point Shirley. South of Ocean Spray, this was just east of the BW&PS. Much of this shared section of right-of-way used a three-rail, dual-gauge track. A branch of the EJBSP&PS was also constructed in Revere, from the junction with the Eastern Railroad north to Point of Pines, parallel with the Eastern's Chelsea Beach line. The EJBSP&PS was not operated until 1884, by which time it had been absorbed into the Boston, Winthrop & Shore RR. It operated for only two summers before being abandoned due to damage from storms.