 At the end of 1926 , the American Association of State Highway Officials formally established the U.S. Highway System and many of the New England inter @-@ state routes were redesignated as U.S. Routes . The portion of New England Route 14 from Barre to Burlington was assigned to U.S. Route 2 , while the portion in New Hampshire was assigned to U.S. Route 4 . This shortened Route 14 in the south to US 4 / US 5 in White River Junction , and in the north to US 2 in the city of Barre . In 1935 , the portion of US 2 between Montpelier and St. Johnsbury was relocated to a more northerly alignment using a section of then Vermont Route 18 . The old US 2 alignment was redesignated as US 302 . VT 14 was extended northward several miles to East Montpelier , ending at the junction of newly relocated US 2 and Vermont Route 12 . 
