October 1, 2010 > Niles Canyon road closure Niles Canyon road closure Submitted By Courtesy of Niles Canyon Railway Signal Department State Route 84 in Niles Canyon, from Old Canyon Road in Fremont to west of Sunol, will be closed for extreme maintenance on Saturday, October 2, from 5 a.m. to 3 p.m. Except for emergency services, the roadway will be closed for all westbound and eastbound traffic, including bicyclists. Work will include, but is not limited to: litter removal, drain cleaning, weed and overgrown brush removal, tree trimming, mowing, rock slide clearing, shoulder grading, pothole repairs, sweeping, striping, and delineation. This maintenance work is mission critical and must be done prior to winter to help prevent flooding and mudslides, which could cause lane and road closures during winter storms. The California Highway Patrol will be on site for traffic enforcement.