The Oregon Department of Transportation is advising travelers to frequently check road conditions and use extreme caution or delay travel plans altogether. ODOT crews, working 12-hour shifts, have applied deicer along all lanes of Interstate 84 between Hood River and Troutdale. Other roads treated with deicer include U.S. Highway 26, and Oregon Highways 224/212 and 211. In addition, an I-84 maintenance project between mileposts 51 and 56 has been postponed. The project would have closed one lane in both directions. Maintenance crews will be checking I-84 and other roads Tuesday night.