AMP: 192 Location: I-15 and 11th Ave, Helena Less than a mile later, exit for US 12 west, US 12 east/US 287 south towards Townsend, and the unmarked business loop, which heads back north through Helena.   S to S-282/S-518, N to S-279/S-453 S to S-518, N to S-279/S-453 N to S-229 E to S-518, … Continue reading Interstate 15, I-15 Bus to I-15 Bus/US-12/US-287