 A small commercial district surrounds the intersection with New Hampshire Route 128/Mammoth Road, and another more developed commercial district lies just to the west of 102's interchange with I-93.Immediately after the interchange with I-93, Route 3A enters Derry as Broadway, the main commercial thoroughfare in town.After the intersection with Crystal Avenue (New Hampshire Route 28) at the center of town, it passes the Hoodkroft golf course and meets Main Street (New Hampshire Route 28 Bypass) at a traffic circle at the community of Derry Village.