I-70 Auxiliary Routes

West

I-270 is a short connector between I-70 and I-25 in Denver, Colorado, Map, Local Traffic
I-470 is a loop around the south side of Topeka, Kansas, Map, Local Traffic
I-670 is an alternate route of I-70 in Kansas City, Kansas and Kansas City, Missouri, Map, Local Traffic
I-470 is a connector between I-70 and I-435 in southeastern Kansas City and Independence, Missouri, Map, Local Traffic
I-170 is a connector between I-64 and I-270 in St. Louis County, Missouri, Map, Local Traffic
I-270 loops around St. Louis city and county. It is supplemented by I-255 to the east, Map, Local Traffic
I-270 is a beltway around Columbus, Ohio, Map, Local Traffic
I-670 is a short connector between I-70 and I-270 in eastern Columbus that provides direct access to Port Columbus International Airport from downtown Columbus, Map, Local Traffic
I-470 is a southern bypass around Wheeling, West Virginia, Map, Local Traffic
I-270 is a spur to Washington, D.C.. It was formerly designated I-70S, Map, Local Traffic
I-370 is a spur to Gaithersburg and Rockville, Maryland from I-270. It never connects to I-70, Map, Local Traffic
I-170 was to have been a spur into downtown Baltimore, Maryland, but the short part that opened never connected to I-70 or to any other Interstate highway. It was decommissioned in 1989, and US 40 is the current designation for the freeway, Map, Local Traffic

East