Law enforcement agencies across the state will be increasing their presence on Minnesota roadways over the next few days due to the St. Patrick’s Day weekend. Local State Patrol Spokesperson Sgt. Jacalyn Sticha says that officials are especially concerned this year because St. Patrick’s Day is on a Saturday. The last time the holiday was on a weekend was 2007 when 527 motorists were arrested for drunk driving and all three traffic deaths were alcohol-related. During a typical weekend in Minnesota, about 170 motorists are arrested for DWI. Alcohol-related crashes account for one-third of all motor-vehicle-related traffic deaths in Minnesota.