How a doomed bridge became the Pacific Northwest’s most unlikely reef

After Galloping Gertie collapsed in 1940, its twisted steel created a thriving underwater world. Now it’s at risk.
Live Science

Science history: The Tacoma Narrows Bridge collapses, forcing a complete rethink in structural engineering — Nov. 7, 1940

The winds were blowing at 40 mph (64 km/h) across the Tacoma Narrows strait when "Galloping Gertie" began to bounce. The Tacoma Narrows Bridge, which connected Tacoma, Washington, with the Kitsap ...