Drivers should be aware of these four lane closures in the Round Rock area during the week of Oct. 9: 1. I-35 will have various southbound lane closures between Westinghouse Road and RM 620 from 9 p.m. until 5 a.m. on Monday. 2. I-35 will be reduced to one northbound lane between RM 620 and Westinghouse Road from 9 p.m. until 5 a.m. through Thursday. Ramps will also be closed as necessary. 3. The outside lane on I-35 will be closed on the southbound access road at Sam Bass Road and the south to north turnaround from 8 p.m. Tuesday until 5 a.m. on Wednesday. 4. The north-to-south turnaround at McNeil Road and I-35 will be closed until Oct. 12.