I'm going to be travelling down I-15 through the Salt Lake area to Moab, UT. My question is should I take US 6 once I get past Provo to get to I-70 or should I continue down I-15 to US 50 to hook up with I-70? Taking US 6 is about 70 miles shorter, but I don't want to get on a two lane road where I'm having to slow down going through lots of little towns. Is anyone familiar with the area? Is US 6 a divided highway? Or is it atleast open enough where I won't get slowed down too much?