ADOT is planning for intermittent overnight full closures of State Route 89A near Pumphouse Wash Bridge in Oak Creek Canyon beginning Tuesday night. The closure will begin Tuesday night at 9 p.m. and will last until 6 a.m. Friday morning. The road will be closed intermittently to traffic through the switchbacks portion of the road, north of the Pumphouse Wash Bridge. The 15-minute, non-consecutive, full closures will occur twice per hour Tuesday through Friday. The restrictions are needed for crews to continue on the State Route 89A Oak Creek Canyon Improvements project, which includes rockfall mitigation, erosion control and a bridge rehabilitation. ADOT reminds travelers to slow down and use caution near crews and equipment.