OAK CREEK — Motorists traveling through the Oak Creek Canyon switchbacks on State Route 89A on Tuesday, April 21, should expect possible delays and allow extra travel time, while crews perform shoulder work at milepost 389.

Maintenance will be performed on Tuesday from 7 a.m. to 3 p.m. with one lane of travel through the area. Flaggers will allow for alternating traffic and drivers are asked to allow for extra travel time to reach their destinations and use caution while traveling through the area.