Interstate 55

highway in the United States from Louisiana to Illinois

Interstate 55 is an Interstate Highway in the United States. It goes from Laplace, Louisiana north to Chicago, Illinois. The route is 964.25 miles (1,551.81 km) long.[1]

Interstate 55 marker

Interstate 55
Route information
Length964.25 mi[1] (1,551.81 km)
Major junctions
South end I‑10 in LaPlace, LA
North end US 41 in Chicago, IL
StatesLouisiana, Mississippi, Tennessee, Arkansas, Missouri, Illinois
Highway system


  1. 1.0 1.1 Federal Highway Administration (December 31, 2013). "Table 1: Main Routes of the Dwight D. Eisenhower National System of Interstate and Defense Highways as of December 31, 2013". Federal Highway Administration. Retrieved August 19, 2014.

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