KENNEBUNK, Maine — Memorial Day weekend is the unofficial kickoff to summer in Vacationland. Take Our Poll (function(d,c,j){if(!d.getElementById(j)){var pd=d.createElement(c),s;pd.id=j;pd.src='https://bangordailynews.com/wp-content/plugins/polldaddy/js/polldaddy-shortcode.js';s=d.getElementsByTagName(c)[0];s.parentNode.insertBefore(pd,s);} else if(typeof jQuery !=='undefined')jQuery(d.body).trigger('pd-script-load');}(document,'script','pd-polldaddy-loader')); The Maine Turnpike Authority (MTA) says nearly 1 million vehicles are expected to travel the turnpike Friday through Monday. The MTA says while construction will stop during the holiday weekend, there are still areas where the turnpike will have lane shifts or will drop down to one lane, which may cause delays and slow traffic. [Subscribe to our free morning newsletter and get the latest headlines in your inbox] The heaviest traffic northbound on the turnpike is expected Friday between 4 p.m.