Intertropolis & Routeville is an American animated television series that first premiered on January 4, 2021 on Nickelodeon for Viacom of the Viacom Media Networks until September 27, 2021 and then was moved to Sintopia TV for Blanding Cassatt of the Blanding Cassatt Media Networks on November 15, 2021 but still remains on Nickelodeon. The series is about the roads and highways that includes Interstate Highways, U.S. Highways, State Highways, and County Roads and is revolved around two main characters named Interstate 48 and U.S. Route 86 who lives in a big metropolis called Highway City, which contains twin cities called Intertropolis, Nevada for the Interstates, and Routeville, Utah for the U.S. Routes. The twin cities are separated by a curveless toll highway called Town Separator, treated as a state border between Utah and Nevada. The animated series is created by Jordan Cassatt and Kimberly Blanding (the Blanding Cassatt Duo), making the series based on their fantasy imaginations of roads and highways. The series finale of version 1 was on September 20, 2029.