Interstate 55 in Arkansas

Interstate 55
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
South end	I-55 / US 61 / US 64 / US 70 / US 78 / US 79 / SR 1 at the Tennessee state line
Major intersections	US 70 in West Memphis I-40 / US 79 in West Memphis US 64 in Marion I-555 / US 61 / AR 77 in Turrell US 61 in Blytheville US 78 / AR 18 in Blytheville
North end	I-55 at the Missouri state line
Location
Country	United States
State	Arkansas
Counties	Crittenden, Mississippi
Highway system
Interstate Highway System Main Auxiliary Suffixed Business Future Arkansas Highway System Interstate US State Business Spurs Suffixed Scenic Heritage
← AR 54 → AR 56

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.