where is I-80?

Answer 1

It's marked in red on this map:
http://en.wikipedia.org/wiki/Image:Interstate_80_map.png

New York to San Fran, basically

Answer 2

Interstate 80 (abbreviated I-80) is the second-longest Interstate Highway in the United States. It connects downtown San Francisco, California to Teaneck, New Jersey, a suburb of New York, just as the Lincoln Highway did in the years before the Interstate Highway System. The highway roughly traces some historically significant travel corridors, particularly in the Western U.S. These include the Oregon Trail in Nebraska and westward, the California Trail in Nevada and California, and the Union Pacific Transcontinental Railroad from western Nebraska to San Francisco.

The highway from near Chicago, Illinois east to near Youngstown, Ohio is a toll road - the end-to-end Indiana Toll Road and Ohio Turnpike. At Youngstown I-80 leaves the tolled alignment, which continues towards New York, in favor of the Keystone Shortway, a shortcut across northern Pennsylvania built as part of a new corridor for I-80. The tolled route to Philadelphia, Pennsylvania was originally designated Interstate 80S, and is now Interstate 76. (Sometimes called the "East Coast Escape Route")

You could get more information from the link below...

Answer 3

I know I-80 runs along Northern Arizona

Answer 4

Starts in San Francisco.

Answer 5

It streches from SF to NY. And it crosses through Chicago, the Quad Cities, Salt Lake City, and many more. One of the main transcontenintal highways.

Answer 6

I know for sure it goes through Pennsylvania, Ohio, Indiana, Illinois, Iowa, Nebraska, and Colorado. There are few more I'm forgetting.

Answer 7

It begins in San Francisco and goes East from there, I don't know how far.

Answer 8

go to map quest and look for