Updated: 3:54 PM EDT May 2, 2021 Exit renumbering work will begin on Interstate 93 north and south Sunday night, according to the Massachusetts Department of Transportation.The project is part of the state s effort to comply with Federal Highway Administration requirements to have exit numbers based on mile markers.Massachusetts previously used a sequential exit numbering method, and if that method continued to be used, the state would lose federal funding.MassDOT s exit renumbering work will begin on I-93 at 8 p.m. Sunday between the old exits 13 and 27, which is the Southeast Expressway between Dorchester and the Tip O Neill Tunnel.Next Sunday, May 9, renumbering will begin between the old I-93 exits 28 and 48, which is between Boston/Somerville and Methuen.The sign installation will take place between the hours of 8 p.m. to 5 a.m., and the work is expected to be completed in approximately four weeks.According to MassDOT, exit numbers 1 through 12 on Interstate 93 will r