Northbound I-475 will close west of I-75 this evening, beginning after 8 p.m., and remain closed until Monday morning, July 27, at 6 a.m. Traffic will be detoured using I-75 northbound to I-475 westbound to I-475 southbound. This is the first of four in a series of weekend-long total closures of northbound I-475 for pavement joint repair and paving. The same work was performed over four weekends on southbound I-475 between early May and late June. The southbound I-75 exit ramp to State Route 25/Dixie Highway will remain open this weekend. The following ramps will close Friday evening and reopen Monday morning:Northbound I-75 to northbound I-475Southbound I-75 to northbound I-475State Route 25/Dixie Highway on-ramp to northbound I-475Message boards are posted south of each interchange throughout the I-475/U.S.