95 South down to I 40, then across to 58 to hit 395, then north to Bridgeport. Roads are all good....well....as good as can be expected for California anyway. 395 is two lane and sometimes lots of trucks, but if you're in an RV, you're not in a rush anyway. Only thing to be concerned about it the danger from boredom at the scenery until you get up 395 a-ways. We've done entire length of 395, from Spokane to San Bernadino couple times, and we ride quads and m/c's near Bridgeport quite often.