Lane closures continue this week in Round Rock off of I-35 and at Old Settlers Boulevard. Here are six closures you should know about: 1. The I-35 southbound entrance ramp from RM 1431 will be closed from 9 p.m. until 5 a.m. through Tuesday night. The Texas Department of Transportation is encouraging drivers to watch for workers on the outside main lane shoulder in this area. 2. The northbound outside lane of I-35 will be closed between RM 620 and Westinghouse Road from 9 p.m. until 5 a.m. through Thursday night. Ramps will be closed as needed. 3. I-35 will be reduced to one southbound lane under FM 3406 from 9 p.m. to 5 a.m. through Thursday night. 4. The outside lane on the northbound I-35 access road will be closed between Gattis School Road and Mays Crossing from 9 a.m. to 4 p.m. through Tuesday, Nov. 21. 5. Old Settlers Boulevard will be reduced to one westbound lane between Mays Street and I-35 from 8 p.m. through 5 a.m. through Tuesday night. 6. The FM 3406 bridge over I-35 is closed until further notice. TxDOT is encouraging westbound traffic to detour over the new turnaround bridge and eastbound traffic to detour south to the crossover at U.S. 79.