The Town Separator is a curveless toll highway in Highway City that runs or lies between the two cities of Intertropolis, Nevada at the west and Routeville, Utah at the east. It serves as a border between Nevada and Utah. The south end is near between Mormon, Nevada and Motoqua, Utah. The north end is near between Panochee Desert, Nevada and Hammling Valley, Utah. The southbound is in Intertropolis, carrying Nevada State Route 900 (NV 900) as a hidden signage. The northbound is in Routeville, carrying Utah State Route 395 (UT 395) as a hidden signage.
Because the Town Separator is paved on the border with Nevada and Utah, it is known colloquially as the Toll Border, the Bi-State Tollway, the Utavada Tollway, the Boundary Highway, and the Toll Road Wall of Intertropolis and Routeville.