On March 24 at 6:54am Mark Anthony Martinez driving a red 2006 Chevrolet Silverado crashed his vehicle on Loop 1604 and fled the scene. Martinez traveling westbound on N Loop 1604 went off the roadway into the grassy median on the north side of Loop 1604 W almost reaching the access road. Martinez attempted to steer the Chevrolet back onto the roadway when he lost control of the vehicle. The vehicle crossed both westbound lanes, crashed into the south guardrail, and flipped onto its roof. When the truck the guardrail it caused the guardrail to be ripped from the support posts and came to rest in the westbound lane of N Loop 1604 W.
Scott Balvin traveling westbound on N Loop 1604 W struck the damaged guardrail and was ejected from his red 2018 Harley Davidson motorcycle. He suffered a broken arm because of the crash and was transported to University Hospital for treatment.
Martinez fled from his vehicle on foot and was detained by Helotes Police Department until San Antonio police officers could arrive. San Antonio police officers placed Martinez into custody and transported him to University Hospital. Upon arriving at University Hospital, personnel evaluated Martinez for signs of intoxication.