It heads north, concurrent with US 79 and unsigned SR 76, along Dupree Street to bypass downtown along its east side to come to an intersection with SR 369, where the highway turns east along N Washington Avenue to leave Brownsville and pass through farmland and rural areas for several miles before crossing into Crockett County via a bridge over the South Fork of the Forked Deer River.

[2] US 70A/US 79 almost immediately enter Bells, where they pass through downtown along High Street and have an intersection with SR 88.

The highway then leaves Humboldt and continues northeast through rural areas, where they have an intersection with SR 187.

They pass through the city as Van Hook Street, where they have an intersection with US 45E/SR 43/SR 77/SR 104, with unsigned SR 77 becoming concurrent with US 70A/US 79/SR 76 here.

US 70A now turns south for a short distance before coming to an end at an intersection with US 70 Business and US 70 (SR 1/SR 364) on Huntingdon’s east side.