Hi, I'm traveling from Logan, Utah to Bethlehem, Pennsylvania and back again from December 23rd for two weeks. It's my second cross country road trip this year. My first time in the winter. I am looking for the best route, is I70 okay in the dead of winter or am I safer dropping down the 15 to the 10? I know there are trucks on I 10. My son is 18 but he doesn't drive or change tires, etc. I am renting a reliable car, and I don't plan on driving more than 500 miles per day. With the exception of the fact that my solo portion of the trip originates from Valencia, California to Logan, Utah, to pick up my son from school. We have family in Bethlehem and plan on visiting NYC as well as DC, before returning home. I love national parks and my earlier trip this past spring was over highway 90 to Pennsylvania and highway 80 and 70 back to Utah to visit my kid before heading back to California.