 In 1922 , the New England states adopted a region @-@ wide system for route numbering . New England Route 14 was initially designated as a north – south route beginning at White River Junction , through Montpelier , to the city of Burlington . The route used modern VT 14 to Barre , then US 302 to Montpelier , and US 2 to Burlington . By 1925 , an extension into New Hampshire had been designated continuing across the Connecticut River to Lebanon , New Hampshire and heading southeast to Franklin , along modern US 4 to Andover and New Hampshire Route 11 to Franklin . 
