Interstate 55 | ||||
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Route information | ||||
Maintained by MDOT | ||||
Length: | 290.41 mi (467.37 km) | |||
Existed: | 1955 (proposed in 1939) – present | |||
Major junctions | ||||
South end: | I-55 at the Louisiana state line | |||
US 98 near McComb US 84 in Brookhaven I-20 / US 49 in Jackson and Richland MS 25 in Jackson I-220 in Ridgeland US 82 in Winona I-69 / I-269 in Hernando |
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North end: | I-55 / I-69 at the Tennessee line | |||
Highway system | ||||
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Interstate 55 (I-55) is a major north–south Interstate Highway that serves the middle of the United States. It runs 963.5 miles (1,550.6 km) from Interstate 10 in Laplace, Louisiana - about 25 miles (40 km) west of New Orleans to U.S. 41 in Chicago, Illinois.
In Mississippi, I-55 runs 290.5 miles (467.5 km) from the Louisiana border near Osyka to Southaven on the Tennessee border, just south of Memphis. The highway parallels U.S. 51 during its trek roughly through the center of Magnolia State. North of Jackson, the Interstate runs east of the bluffs of the Mississippi Delta.
On January 18, 2008, the Federal Highway Administration authorized the states of Mississippi and Tennessee to extend I-69 from the I-40/TN 300 interchange in north Memphis to the I-55/I-69 interchange in Hernando; in late May 2008, Mississippi began posting signs reflecting the extension of the route.