From the Forest Service:
The Mt. Baker-Snoqualmie National Forest is closing the Middle Fork Road (Forest Service road 56) weekdays to vehicle traffic Oct. 18 – Dec. 1 for road repairs. The road will be closed at mile post 12.1, east of the Middle Fork Campground entrance and the Taylor River. The Middle Fork Trail will be open for hikers and mountain bikers. For updated information call the Snoqualmie Ranger District at 425-888-1421.
See the road conditions for I-90 as well.