A breakdown of I-70's auxiliary routes follows: I-270 is a short connector between I-70 and I-25 in Denver, Colorado. It also carries US 36 along its entire length. I-470 is a loop around the south side of Topeka, Kansas. I-670 is an alternate route of I-70 in Kansas City, Kansas, and Kansas City, Missouri. I-470 is a connector between I-70 and I-435 in southeastern Kansas City and Independence, Missouri. I-170 is a connector between I-64 and I-270 in St. Louis County, Missouri. I-270 loops around the city and county of St. Louis, Missouri. It is supplemented by I-255 to the east. I-270 is a beltway around Columbus, Ohio. I-670 is a highway beginning at I-70 west of Downtown Columbus, Ohio, and terminating at I-270 in eastern Columbus that also provides direct access to John Glenn Columbus International Airport from downtown. I-470 is a southern bypass around Wheeling, West Virginia. I-270 is a spur to Washington DC. It was formerly designated I-70S. I-370 is a spur to Gaithersburg and Rockville, Maryland, from I-270. It never connects to I-70. 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.
A breakdown of I-70's auxiliary routes follows: I-270 is a short connector between I-70 and I-25 in Denver, Colorado. It also carries US 36 along its entire length. I-470 is a loop around the south side of Topeka, Kansas. I-670 is an alternate route of I-70 in Kansas City, Kansas, and Kansas City, Missouri. I-470 is a connector between I-70 and I-435 in southeastern Kansas City and Independence, Missouri. I-170 is a connector between I-64 and I-270 in St. Louis County, Missouri. I-270 loops around the city and county of St. Louis, Missouri. It is supplemented by I-255 to the east. I-270 is a beltway around Columbus, Ohio. I-670 is a highway beginning at I-70 west of Downtown Columbus, Ohio, and terminating at I-270 in eastern Columbus that also provides direct access to John Glenn Columbus International Airport from downtown. I-470 is a southern bypass around Wheeling, West Virginia. I-270 is a spur to Washington DC. It was formerly designated I-70S. I-370 is a spur to Gaithersburg and Rockville, Maryland, from I-270. It never connects? to I!-70. 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 Int!erstate Highway. It was decommissioned in 1989, and US 40 is the current designation for the freeway.