Construction continues this week in Round Rock on I-35 and RM 620. Here are three lane closures to know about this week: 1. One through lane and one turn lane on I-35 will be closed on the north- and southbound access roads approaching and across Old Settlers Boulevard from 7 p.m. until 5 a.m. on Monday through Thursday nights. 2. The southbound outside lane on I-35 will be closed between Westinghouse Road and US 79 from 9 p.m. until 5 a.m.  between Sept. 17 and Thursday night. Ramps will also be closed as needed. 3. There will be no access to or from Oakwood Boulevard from RM 620 from 9 a.m. Monday until 5 p.m. Tuesday, Sept. 26. The Texas Department of Transportation is encouraging drivers to detour via Oaklands or Oak Park drives and Spring Hollow Path.