I-55 highlighted in red | ||||
Route information | ||||
Maintained by ArDOT | ||||
Length | 72.22 mi[1] (116.23 km) | |||
Existed | 1957–present | |||
NHS | Entire route | |||
Major junctions | ||||
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North end | ![]() | |||
Location | ||||
Country | United States | |||
State | Arkansas | |||
Counties | Crittenden, Mississippi | |||
Highway system | ||||
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Interstate 55 (I-55) is a north–south Interstate Highway that has a 72.22-mile (116.23 km) section in the US state of Arkansas connecting sections in Tennessee and Missouri. The route enters Arkansas on the Memphis & Arkansas Bridge over the Mississippi River from Memphis, Tennessee. It travels northward through northeast Arkansas, connecting the cities of West Memphis and Blytheville. I-55 continues into Missouri heading to St. Louis, Missouri. The highway overlaps I-40 in West Memphis and has a junction with I-555, a spur route to Jonesboro, in Turrell. For the majority of its routing through Arkansas, I-55 generally follows U.S. Highway 61 (US 61) and has a 67.08-mile (107.95 km) long concurrency with US 78 from the Tennessee state line in Memphis to Blytheville for most of its length.