Interstate 680 (Iowa-Nebraska)
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Interstate 680 (abbreviated I-680) in Nebraska and Iowa is the northern bypass freeway for the Omaha, Nebraska-Council Bluffs, Iowa metropolitan area. I-680 spans 42.86 miles from its western terminus in western Omaha to its eastern terminus roughly 27 miles northeast of Council Bluffs. For a 14-mile stretch, I-680 is co-signed with Interstate 29. Until 1973, the section in Iowa between the current eastern terminus and I-29 was designated as Interstate 80N.
I-680 in Omaha was originally designated I-280; maps from the early and mid-1960s showed I-280 in Omaha. Since this highway would extend into Iowa, and Iowa had another I-280 planned for the Quad Cities area, one of the these I-280s would have to be renumbered. I-680 was designated as a result of these actions.
[edit] Major cities and suburbs
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Auxiliary routes of Interstate 80 |
| I-180 | Illinois - Nebraska - Pennsylvania - Wyoming |
| I-280 | California - Illinois/Iowa - New Jersey - Ohio |
| I-380 | California - Iowa - Pennsylvania |
| I-480 | Iowa/Nebraska - Ohio |
| I-580 | California - Nevada |
| I-680 | California - Iowa/Nebraska - Ohio |
| I-780 | California |
| I-880 | California |
| I-980 | California |
| past/ future |
I-180: California - Pennsylvania - I-280: Iowa/Nebraska - Pennsylvania - I-480: California - Pennsylvania - I-580: Nebraska - I-680: Pennsylvania |
