 The Unitarian Universalist Society in Bangor held a morning service for Howard, followed by a procession to the State Street Bridge, where a wreath and flowers were thrown into the stream. Southbound holiday traffic was heavy enough yesterday that officials opened a shoulder lane to traffic on I-95 in the vicinity of the Piscataqua River Bridge connecting Maine and New Hampshire. The state spent about $10 million to create an electronic system that allows motorists to drive on the shoulder when traffic is heavy.