Complex sentence: Due to inadequate earthquake engineering, the parking structure next to the Matadome was completely destroyed, and is currently a grass field used for kinesiology instruction, though the driveway formerly used to enter the structure is still visible from Zelzah Avenue.
Split into simpler sentences: Due to inadequate earthquake engineering, the parking structure next to the Matadome was completely destroyed. It is currently a grass field used for kinesiology instruction, though the driveway formerly used to enter it is still visible from Zelzah Avenue.