Stage 4 of Amgen’s Tour of California is passing through San Luis Obispo County today. Don’t get caught in the traffic, below is a list of the main road closures. Highway 135 at Clark and highway 101 at Clark from 12:15-12:45 Highway 166 will be the longest closure at 1:30 for about 40 minutes. Highway 101 at Los Berros at 2:15. …