Memorial Day weekend will bring a break from temporary construction-related closures along state highways. ADOT will not schedule weekend closures along state-maintained highways from Friday afternoon through late Monday night. Although, the northbound I-17 ramp to westbound I-40 in Flagstaff will remain closed until late this year for a bridge-improvement project. And as a safety measure, speed limits along I-17 between New River and Sunset Point north of Phoenix will be reduced by 10 mph during peak travel periods over the holiday weekend.