The crash closed Route 20 in both directions between Wayside Inn Road’s Marlborough and Sudbury intersections with Route 20, the department said. “Traffic detours in place,” MassDOT wrote.

An investigation is underway after a tractor-trailer and another car collided head-on in Sudbury Tuesday morning. Officers responding to the area of Route 20 near Wayside Road around 10:30 a.m ...