MILWAUKEE (AP) – If you’re hitting the road for the Memorial Day weekend, you’ll have lots of company.  The travel organization AAA estimates 627,000 people are expected to travel by land during the weekend in Wisconsin and another 33,000 by air. Travel is expected to be down about 1.6 percent from last year.  Statewide, gas prices are averaging $3.93 a gallon, or 33 cents more than a month ago and 21 cents higher than last year. AAA says gas prices are higher here than the national average of $3.65 because several refineries in the Upper Midwest have been closed for maintenance.  You’re expected to have the most company on state roads from noon to 8 p.m. on Friday and again Monday during the same hours.