US 70 enters Tennessee, as well as the city of Memphis, concurrent with Interstate 55, US 61, US 64, and US 79. At exit 12, the northernmost exit on I-55 in the state, I-55 turns south; however, the four US routes continue east onto the at-grade Crump Boulevard. US 61 splits from the concurrency soon afterward, heading south along 3rd Street to exit the city. US 64, 70 and 79, however, remain overlapped through downtown Memphis, following Danny Thomas Boulevard north to Union Avenue, Union east to East Parkway (briefly overlapping with U.S. Route 51 along the western portion of Union), then East Parkway north to Summer Avenue, where the triple concurrency turns east. Near the city line, US 64/70/79 interchanges with Interstate 40 at exit 12A.