Interstate 264 is a partial loop around the city of Louisville, Kentucky, south of the Ohio River. An auxiliary route of I-64, it is signed as the Shawnee Expressway for its first eight miles from its western terminus at I-64/US 150 to US 31W/US 60 and as the Watterson Expressway for the remainder of its length from US 31W/US 60 to its eastern terminus at I-71. From Wikipedia