In 1965, the state legislature authorized the extension of VT 17 from Bristol to the Addison–Chittenden county line, connecting it to the McCullough State Highway by way of Chittenden County's section of the former McCullough Turnpike.
In 1965, the Vermont legislature authorized the extension of VT 17 from Bristol to the Addison–Chittenden county line, linking it to the McCullough State Highway via Chittenden County's portion of the former McCullough Turnpike.