Interstate 84 near milepost 53 west of Hood River will see rolling slowdowns and delays Thursday between 12:30 p.m. and 2:30 p.m. for rock blasting necessary to build the latest segment of the Historic Columbia River Highway State Trail. Oregon Department of Transportation spokesman Don Hamilton says the blasting is necessary to construct a segment of the trail between Wy’eth and Lindsey Creek, and will not impact Eagle Creek Fire rehabilitation at Shellrock Mountain a mile to the west of the trail work. This work is located in the same area where eastbound traffic is temporarily diverted into one lane of westbound I-84 due to fire debris removal activity from the Eagle Creek Fire. There may be as many as of seven rock blasts, taking place about once a week through mid-November. Exact dates will be announced in advance of each blast.