The new Memorial Bridge connecting New Hampshire and Maine is still on track to open this summer. But the exact date is still to be determined. Transportation officials say when the contractor in charge is satisfied the lift bridge is operating smoothly, maintenance crews will need specialized training to take over operations. Even when the bridge opens, its approaches and other areas will still be under construction into the fall. The bridge is replacing a nearly 90-year-old bridge connecting Portsmouth to Kittery, Maine. With the bridge under construction and Sarah Mildred Long Bridge closed for repairs, the only bridge between the cities open to traffic is the Piscataqua River Bridge on Interstate 95.