A drainage maintenance project on Highway 154 (San Marcos Pass Road) will result in daytime traffic control 9 a.m.-3 p.m. Tuesday, Nov. 25.
Travelers in both directions of Highway 154 will encounter one-way flagging operations between the junction with US 101 and Foxen Canyon Road.
With expected delays of up to 10 minutes, motorists are asked to allow extra time during their commute that day.
The maintenance work is necessary to clear drainages affected by runoff of dirt and debris following recent rainfall, according to Caltrans.