BUMP for hoping you have a safe trip...and BUMP for pointing out I'm close to I-90, so if you're staying on I-84 until you hit I-15, you'll be pretty far south of me until you get to I-15 and start heading north.
And BUMP for suggesting, if you're going to cut up to I-90 before getting to Idaho, that you cut up on US 395 through the Tri-Cities. Faster then going up through BUMPing Goldendale then through Yakima.
we bumped on I-84 to US 395 to I-90 all the way to Billings, but came back I-90 to US 12 and US 730 to I-84 The warden was impressed following the Clearwater so far and then seeing it empty in to the Snake and then into the Columbia. She now understands when I talk about the "Continental Divide" and that all the water in the Rockies heads for the sea. .... Bump