Two more Interstate 75 closures remain until Florida Department of Transportation crews are able to complete work on the Ponce De Leon Boulevard overpass. The emergency work follows a dump truck crash last week that caused severe damage to a support beam. According to FDOT spokesman Dave Parks, the southbound lanes of I-75 near mile marker 184 will be closed from 1 a.m. to 5 a.m. Friday, then again from 8 p.m. Friday until 7 a.m. Saturday, to complete the work.