From Wikipedia, the free encyclopedia.
Interstate 580 is the designation for two tertiary interstate routes.
California
Interstate 580 in northern California is a heavily traveled, fairly long spur route of Interstate 80 that connects the San Francisco Bay Area to Interstate 5 in the central valleys of the state. The western terminus of I-580 is north of San Francisco in San Rafael. The eastern terminus is with I-5 southeast of Tracy.
Major cities and suburbs
Nevada
Interstate 580 in Nevada is a planned interstate route between Reno and Carson City that is still under construction. I-580 has been part of the Interstate planning in Nevada since the 1950s but has never been completed. Much of the future I-580 will be co-signed with the current U.S. Highway 395 freeway in Reno but will not travel north of Interstate 80. I-580 is slated to be completed in 2008.
See Interstate 80
