What is a trunnion?
The northbound span of the Interstate Bridge will close from September 12–20, 2020 as crews replace a mechanical part that helps lift and lower the bridge. But what is that mechanical part? It is called a trunnion. We turned to ODOT's Bridge Maintenance Supervisor, Marc Gross, to help us understand all things "trunnion". Visit www.interstatebridge.org for more information.