SOUTH PORTLAND — From August 9 to August 11, the Maine Department of Transportation (MaineDOT) will close Route 1 between Billy Vachon Avenue and the I-295 southbound on ramp at Exit 4, including the ramp from Veterans Memorial Bridge, from 8 p.m. to 6 a.m., each night as part of a highway construction project. Traffic will be detoured via Main Street, Westbrook Street, and Broadway to the I295 southbound onramp at Exit 3.