San Antonio Police said a man who was struck by a car on Nacogdoches Road Saturday night Road suffered life-threatening head injuries.
It happened around 9:00 p.m. near Toepperwein Road.
Police said the man was walking in a crosswalk when he was struck, but believe heavy rain may have decreased visibility in the area.
Police are also working to determine if the man had fallen in the road before being struck.
The driver of the car will not be facing charges in the incident.
The man, who's described as in his 40s, was taken to SAMM-C.