Providence Bridge Pedal , formerly known as the Portland Bridge Pedal is an annual recreational cycling and walking event across several Willamette River crossings in Portland , Oregon . Oregon State Representative Rick Bauman is credited with conceiving the event while watching the 1980 eruption of Mount St. Helens on the Marquam Bridge . By 2007 it became the world 's third largest annual recreational cycling event behind the Five Boro Bike Tour in New York City , New York and Tour de l'Île in Montreal , Quebec
1980 eruption of Mount St. Helens
1980 eruption of Mount St. Helens
Providence Bridge Pedal