Get ready for a traffic change on the Massachusetts Turnpike to end the week -- it's a major milestone for the massive project rerouting traffic in Newton. Crews from the Massachusetts Department of Transportation will close a lane westbound starting at 10 p.m. Friday, lasting until 6 a.m. Saturday. WATCH HERE WATCH HEREThis is expected to create some confusion as Saturday morning drivers will be the first to test it out. This is going to be happening overnight, according to Gulliver, so people will experience it first thing Saturday morning. The work is part of an ongoing $400 million project at the busy interchange that's expected to wrap up sometime next year.