San Antonio-based fast food phenom Burger Boy isn’t done expanding. Days after announcing the opening of a much-anticipated drive-thru near the University of Texas at San Antonio campus, the company filed with the state of Texas to construct a new location in the northeastern suburb of Windcrest. Work on the $1.1 million stand-alone restaurant at 7560 I-35 North is expected to get underway in October, according to Burger Boy’s filing with the Texas Department of Licensing and Regulation.