Idaho State Police have been responding to multiple accidents this morning, and approximately 30 crashes and slideoffs in the Coeur d'Alene area yesterday. And personnel at Kootenai Medical Center say they've treated an inordinate number of weather-related injuries. The 'Scanner Traffic' portion of the Spokesman-Review's 'Huckleberries' blog has this big list of traffic challenges.
And this article from the Coeur d'Alene Press sums up area conditions. Interestingly, the comments that follow this article call for cable barriers in the medians like much of Washington state has.
A reminder that if you commute to Spokane, it's a good idea to check out the Spokane Regional Transportation Management Center website before hitting the roads. That way you can see conditions on I90 and other arterials and plan accordingly.