From Interstate 35 Frontage Road and University Boulevard, Round Rock, Texas, drive west on Farm to Market 1431 W toward IH 35. Make the first left turn onto IH 35. Take the ramp to your left onto I-35 S. Take exit 250B toward Texas-45/TX-1Toll road. Keep left at the fork, follow signs for Texas 45 and merge onto Texas 45 Toll EToll road. Take the exit toward A.W Grimes BoulevardToll road. Merge onto S H 45. Make a left turn onto S a w Grimes Boulevard/Co Road 170Continue to follow S a w Grimes Boulevard. Make a right turn onto Co Road 168/Gattis School Road. Make the first left turn onto S Creek Dr. Colonial Village at Sierra Vista Apartments will be on the right.