Charles Wetzel saw a strange creature on the night of November 8th, 1958. He was driving home on North Main Street and came across where it crosses the Santa Ana River only to find it flooded. Wetzel claimed “It had a round, scarecrowish head like something out of Halloween. It wasn’t human. It had longer arms than anything I’d ever seen. When it saw me in the car it reached all the way back to the windshield and began clawing me. It didn’t have any ears. The face was all round. The eyes were shining like something fluorescent, and it had a protruberant mouth.” He also described it as having skin like scales.
After running over the monster with his car, he quickly sped to the Riverside, California, police station where officers took a look at his vehicle. They noted claw marks on the hood and windshield of the car but the bloodhounds that searched it found nothing unusual. At least one other person claimed to have a run in with the Riverside Bridge Monster.