 The closures will be in effect nightly from 6 tonight through 5 Wednesday morning. Southbound I-17 will also have the right lane closed on a one-mile stretch near Sunset Point and the left lane will be closed near Bumblebee Road for earthwork. Closures are in effect from 7 nightly through 5 Wednesday morning. There will be alternating left and right lane closures near Black Canyon City nightly from 7 tonight to 7 Wednesday morning for earthwork and a traffic shift.