Motorists may experience traffic delays this weekend as various lanes are closed on US 75 and on the US 75 frontage roads, between Campbell Road and Plano Parkway, due to DART Silver Line bridge work. Nightly work will take place tonight and tomorrow night from 9 a.m.-7 a.m., and Sunday night from 9 a.m.-5 a.m. In addition, frontage road sections may be closed 24/7 or as needed. For details on specific closures, click here.