New Hampshire's first turnpike was not Interstate 93 or I-95; it was the Concord to Portsmouth Turnpike. In 1791 the Legislature authorized a committee to survey and layout a road from Concord to Durham Falls with a branch to Newmarket. Henry Gerrish, a committee member, was also a surveyor. His notes and route survey are in a file at the University of New Hampshire library, together… 0