Texas State Highway 28 (Spur 28) is a state highway the U.S. state of Texas.Spur 28 is a short connecting route in Brazoria County between SH 35 between Angleton, Texas and Alvin and the small town of Danbury. The highway follows a generally southeast path, and is referred to as Main Street in Danbury. The official highway designation ends at Sixth Street, where Main Street crosses over the Union Pacific railway into the center of town.