Unless bad weather postpones the work, some lanes and ramps on the south end of the Dallas North Tollway will be closed Tuesday, Wednesday and Thursday nights.

Traffic will be switched onto newly constructed lanes during that time, the North Texas Tollway Authority announced Tuesday.

The southbound right lane from Lemmon Avenue to Maple Avenue will be closed from 8 p.m. Tuesday through 5 a.m. Wednesday. The southbound Wycliff Avenue exit ramp and the southbound Lemmon Avenue entrance ramp also will be closed.

From 8 p.m. Wednesday to 5 a.m. Thursday, NTTA will close various southbound lanes between Mockingbird Lane and Maple Avenue. The southbound Wycliff Avenue exit ramp and the southbound Lemmon Avenue entrance will be closed as well.

In addition, the northbound lanes from Maple Avenue to Mockingbird Lane will be closed from 10 p.m. Wednesday through 5 a.m. Thursday.

On Thursday night, some northbound lanes from Maple Avenue to Mockingbird Lane will be closed, as will the northbound Wycliff Avenue entrance ramp and the southbound left lane from Lemmon Avenue to Maple Avenue.