 Interstate 55 | |
|---|---|
 I-55 highlighted in red | |
| Route information | |
| Length | 964.25 mi[1] (1,551.81 km) |
| Existed | 1957–present |
| NHS | Entire route |
| Major junctions | |
| South end |  I-10 in LaPlace, LA |
| |
| North end |  US 41 in Chicago, IL |
| Location | |
| Country | United States |
| States | Louisiana, Mississippi, Tennessee, Arkansas, Missouri, Illinois |
| Highway system | |
Interstate 55 (I-55) is a major Interstate Highway in the central United States. As with most primary Interstates that end in a five, it is a major cross-country, north–south route, connecting the Gulf of Mexico to the Great Lakes. The highway travels from LaPlace, Louisiana, at I-10 to Chicago, Illinois, at U.S. Route 41 (US 41, Lake Shore Drive), at McCormick Place. The major cities that I-55 connects to are (from south to north) New Orleans, Louisiana; Jackson, Mississippi; Memphis, Tennessee; St. Louis, Missouri; and Chicago, Illinois.
The section of I-55 between Chicago and St. Louis was built as an alternate route for U.S. Route 66 (US 66). The Interstate crosses the Mississippi River twice: once at Memphis and again at St. Louis.
- ^ 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.