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Interstate 255 Travel Guide

Interstate 255 (I-255) is a bypass route of Interstate 55 near St. Louis, Missouri and with Interstate 270, it forms a loop around the city. Even though St. Louis is in Missouri, a majority of the route runs through Illinois. It shares its southern terminus with 270 at the junction with Interstate 55, 270 goes to the west and 255 goes to the east. US 50 joins I-255 ... more.


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