Mattapan Trolley: Shuttle buses will replace service the weekend of June 22 - 23, beginning Friday, June 21 at 8:30 PM for track work. Starts Jun 21 Until Jun 24 All shuttle buses will be available for riders who need it - see station personnel for assistance. Passengers seeking service from Central Ave, Valley Rd. and Capen St. can access the shuttles from Eliot St.