I will be moving to Spokane pretty soon probably late December/January, from Las Vegas. The directions I see mapped are the US 93 to I 84 to I 90. Does this seem to be the best route? I'm afraid of heights, and I see two bridges on that route in Umatilla and Kennewick, how bad are they? Anything else I should be worrying about? A friend mentioned sometimes they have black ice in the winter, but I don't the area well enough to know what month or time of year that happens. Any advice would be appreciated.