The following roadwork will affect drivers Aug. 16 and 17. 1. I-35 will have one southbound lane closed between Westinghouse Drive and US 79 from 9 p.m.-5 a.m. on Wednesday and Thursday nights. The Texas Department of Transportation is warning drivers to expect alternating ramp closures. 2. I-35 will be reduced to one northbound lane approaching and under FM 3406 from 9 p.m.-5 a.m. on Wednesday and Thursday nights. 3. RM 620 will have closures in both directions between Wyoming Springs and Briarwood Street from 8 p.m.-6 a.m. Wednesday and Thursday nights. TxDOT will shift eastbound traffic to new lanes.