A Physics Lesson From Tragedy: The Original Tacoma Narrows Bridge Opened 81 Years Ago
On July 1st, 1940, a suspension bridge over the Tacoma Narrows, aptly named the Tacoma Narrows Bridge , opened to automobile traffic. ( Location ) The bridge connected Tacoma, WA the Kitsap Peninsula over Puget Sound, originally carrying Primary State Highway 14, which is present-day Washington Route 16. Tacoma Narrows Bridge Opening , 1940. Image: Washington State Department of Transportation. The bridge was a grand engineering marvel, as it was the third largest suspension bridge in the United States, only behind the Golden Gate Bridge in San Francisco and the George Washington Bridge between New York and New Jersey, each of which is still standing today. However, even before the bridge was completed, workers noticed its tendency to sway in the wind. Efforts were made to correct this behavior in the bridge, but these attempts proved to be futile. One reason was the bridge itself was quite narrow - apologies to the name. It was just two lanes (one lane in each direction) wide, as tr...