Total Distance -
42,794 miles
Longest Route - I-90;
Seattle, WA. to Boston, MA; 3,085.27 miles
Shortest Route - I-97;
Annapolis, MD. to Baltimore, MD; 17.57 miles
Oldest Segment - The
oldest segment predates the interstate system. Grand Central Parkway
in Queens, New York, opened in 1936 and was later melded into the interstate
highway system as I-278.
Exceptions - All but
six state capitals are served by the interstate highway system. Those
that are not served are Juneau, AK; Dover, DE; Jefferson City, MO; Carson
City, NV and Pierre, SD.
Alaska - There are
no interstates in Alaska.
Hawaii - There are
two interstates in Hawaii.
Route 66 - commissioned
in 1926, it crosses 8 states and 3 timezones. In 1985, Route 66 was
officially decommissioned.
