Drivers in Plano on Thursday and Friday nights should be aware of lane closures planned for the Dallas North Tollway and Spring Creek Parkway. The following lanes and ramps will be closed Thursday and Friday. The following lanes and ramps will be closed Thursday and Friday.[/caption] The two southbound left turn lanes on Dallas Parkway from Tennyson Parkway to just south of Spring Creek Parkway will be closed from 9 p.m. Thursday- 5 a.m. Friday. Additional lane closures Thursday and Friday include all east- and westbound lanes on Spring Creek Parkway between north- and southbound Dallas Parkway, which are expected to be closed from 8:30 p.m. Thursday to 5 a.m. Friday. The southbound Spring Creek Parkway exit ramp will also be closed from 8 p.m. Thursday to 5 a.m. Friday. The closures, coordinated with the city of Plano, are part of a broader project to add an additional lane to the tollway between SH 121 and President George Bush Turnpike and construct a new Tennyson crossing over the major north-south thoroughfare. Closures are subject to weather conditions and may be postponed, if necessary. Drivers should expect delays, according to a news release.