Nighttime maintenance will restrict State Route 69 in Prescott Valley beginning Tuesday. ADOT crews will conduct pavement repair work on the highway near Truwood Road and Glassford Hill Road during overnight and early morning hours Tuesday through Friday. Drivers should prepare for lane restrictions in the area while work is underway. Speed limit in the work zone will be reduced to 45 miles per hour. Drivers should obey traffic control devices and use caution around construction personnel and equipment.