MOUNTAIN HOME, Ark. – The U.S. Army Corps of Engineers will be closing one lane of Highway 177 across Norfork Dam from 6:30 a.m. on Sept. 1 until 5 p.m. on Nov. 1, 2023, for routine maintenance. USACE will begin installing traffic control equipment at 6:30 a.m. on Aug. 28 in preparation for the closure.