 In the 1960s, the northern half of Vermont Route 12 (north of Montpelier) was relocated to the "Montpelier-Morrisville State Highway", which connected Montpelier with the village of Morrisville. Originally, VT 12 continued north from Montpelier via East Montpelier to Hardwick and Barton, then overlapped with U.S. Route 5 to the city of Newport via Coventry. Between Hardwick and Coventry, VT 12 had an alternate route, Vermont Route 12B, that took a more westerly alignment via Albany. The relocation of the northern half of VT 12 to a new alignment resulted in the redesignation of its original northern alignment. The portion between Hardwick and Barton became a new Vermont Route 16. The portion between East Montpelier and Hardwick was assigned as an extension of VT 14. At the same time, VT 12B was also redesignated as a further northward extension of VT 14, including an additional 4-mile (6.4 km) piece connecting to VT 100 in the town of Newport, resulting in the modern VT 14 alignment.
