San Antonio’s Sukhothai Thai Restaurant later this year will open a fourth local dining spot, this one in the West Side’s quick-growing Rio Medina area. The homegrown chain, which specializes in Thai cuisine and bubble tea, plans to construct a 1,350-square-foot eatery at 15082 FM 1957, Suite 112, according to an Aug. 17 filing with the Texas Department of Licensing and Regulation. Construction is slated to begin in mid-September, and the restaurant will be done in December, plans show.