 Closures are in effect from 7 tonight through 5 tomorrow morning. There will be alternating left and right lane closures near Black Canyon City from 7 tonight to 7 tomorrow morning for earthwork and a traffic shift. ADOT officials are reminding drivers that the posted speed limit is 65 miles per hour and fines are doubled through the 23-mile construction zone. There will be no project-related closures or restrictions starting at 5 tomorrow morning and running through 5 Monday morning in observance of the Independence Day holiday. I'm Lindsay Draper reporting.