I vaguely recall something posted on TO saying it's due to trackwork somewhere between Vancouver and Pasco. Whatever the reason, it's exactly the kind of operation I've been hoping to get over there and shoot, but the best locations are probably going to be snowed in until June. Might be some open access the first few miles west of Easton, but the real meat of the pass, uphill or down, will probably require several miles on snowshoes or a snowmobile right now.