FORT WAYNE, Ind. (WANE) - Traffic will be slowed periodically on northbound Interstate 469 Saturday night into Sunday morning while Indiana Michigan Power crews replace utility lines on Fort Wayne's north side. On-ramps will be closed for northbound I-469 from Maplecrest Road and for both northbound and southbound I-69 to southbound I-469, according to the Indiana Department of Transportation. Rolling slowdowns are scheduled from 10 p.m. Saturday to 10 a.m. Sunday, depending on the weather. Each slowdown will last no longer than 20 minutes with a 20-minute gap between each slowdown, INDOT said.