Primary Interstate Highways are the major interstate highways of the United States and have a one or two-digit route number. Even (0, 2, 4, 6, or 8) route
are eight Interstate Highways in Baltimore. These are: I-70 I-83 (the Jones Falls Expressway) I-95 (the John F. Kennedy Memorial Highway) I-395 I-695 (the
transportation infrastructure. The interstate highways that do continue into Washington, including Interstate 66 and Interstate395, both terminate shortly upon
Companion to American History. New York: Houghton Mifflin. pp. 576. ISBN 0-395-51372-3. McDuffie, Jerome; Wayne Piggrem, Gary; E. Woodworth, Steven (2005)