On Wednesday, January 3rd, 1923, Cowlitz County Commissioner-elect Benjamin Barr sat in the back seat of his vehicle, when his driver - Arleigh Millard - felt an unsettling shudder through the springs in his seat. Miller glanced nervously at Barr through the rearview mirror, unable to move the vehicle forward. The pair were stuck atop the Allen Street Bridge here in Kelso, Washington, when seconds later it all came crashing down, resulting in the deadliest bridge collapse in Washington State History. Joint your fearless field guide Erich Ebel on this trip back in time to discover the causes and consequences that resulted in this historic tragedy.