Auxiliary routes thumb|right|108px|I-44/I-55/I-64/I-70 on one highway sign in Downtown St. Louis, Missouri : Former spur to Evansville, Indiana, known as the Robert D. Orr Highway, became I-69 in 2014. : Loop around Louisville, Kentucky; also called the Georgia Davis Powers/Shawnee Expressway west of the Dixie Highway (US 31W) exit and the Watterson Expressway east of US 31W/Dixie Highway , , , : All serving the Hampton Roads region in Virginia.
Auxiliary routes thumb|right|108px|I-44/I-55/I-64/I-70 on one highway sign in Downtown St Louis Missouri  Former spur to Evansville Indiana known as the Robert D Orr Highway became I-69 in 2014  Loop around Louisville Kentucky; also called the Georgia Davis Powers/Shawnee Expressway west of the Dixie Highway (US 31W) exit and the Watterson Expressway east of US 31W/Dixie Highway     All serving the Hampton Roads region in Virginia