Just a few tips..
If you are coming from the east via I-80, it would be in your best interest to detour through Ogden via I-84 at Echo junction, about 30 miles west of Evanston Wyoming. I-80 is much steeper and is also under construction along the east side of Salt Lake still. If you do choose to come through Salt Lake, a good choice would be to take the I-215 belt route around the south end of the city and pick up I-80 on the west side of the valley. I-215 can be accessed at the bottom of Parleys canyon on I-80. SR 201 (the 21st south freeway) is a complete nightmare frpm 3200 west to 6500 west pulling a trailer and should be avoided at all costs. I know it is hard when you are getting so close to mecca, but don't speed through ANY construction zones. The Utah Highway Patrol is freely handing out double fine tickets for speeding in construction zones. And they are good at using inconspicuous unmarked cars. Please drive safe everyone and I hope to see you all on the Salt....