AMP: 118
Location: I-15 and Broadway St, Idaho Falls
Just as US-20 joins the interstate, it will leave. Exit for 20 west towards Arco and I-15 Business into town. US-20 Business east also exits, and that will head into downtown too.
S to I-15 Bus/US-26, N to SH-48
E to US-20 Bus, W to I-15/I-15 Bus/US-20