Vermont Route 73 (VT 73) is a 36.674-mile-long (59.021 km) east–west state highway in central Vermont, United States. It extends from VT 74 in Shoreham in the west to VT 100 in Rochester in the east. The route runs through parts of Addison, Rutland, and Windsor counties. The portion of VT 73 west of VT 22A is town-maintained and internally designated by VTrans as Major Collector 156 while the remainder of VT 73 is maintained by the state.

Vermont Route 100 (VT 100) is a north–south state highway in Vermont in the United States. Running through the center of the state, it travels nearly the entire length of Vermont and is 216.666 miles (349 km) long. VT 100 is the state's longest numbered highway of any type.