From I-40 Take 147 towards Durham
Then take Exit 16A for 15-501 N but stay on the offramp
Immediately take Exit 108D
At the top of the offramp, go left on Hillsborough Rd / US 70
4430 Hillsborough Rd is 1.7 miles on your right
Take 15/501 towards Durham
Take Exit 108D for US-70 Business / Hillsborough Rd
Left at the light onto US-70 / Hillsborough Rd
4430 Hillsborough Rd is 1.7 miles on your right