David Douglas Potts II, 21, disappeared after a high-speed police chase on October 29, 2006, that ended in a crash on the Blanchette Bridge carrying Interstate 70 over the Missouri River. He was driving a friend’s car, fled on foot after the crash and climbed over the bridge’s guardrail. It is unclear whether he fell into the river or landed on a catwalk below the deck; he has not been seen since.

At the time he vanished he wore a dark blue or black Carhartt jacket with a torn pocket, blue jeans and black-and-white Vans. Authorities initially treated him as a wanted person and a missing persons report was not filed until November 1. A week-long search of land and water around the bridge turned up nothing. His bank accounts and paychecks have remained untouched.

Two main theories persist: that he fell into the Missouri River and drowned, or that he survived the fall or reached the catwalk and then left to start a new life, a possibility some friends cited based on things he had said. The St. Louis County Police Department has investigated but the case remains unsolved.

Did anyone in the area around the Blanchette Bridge on October 29, 2006, see or hear anything that could help explain what happened?