Tacoma Narrows Bridge (1940)
Construction of the bridge started in September 1938. After the deck was built, the wind caused it to move vertically. Because of this, the people building it gave it the nickname Galloping Gertie. The movement was seen even when the bridge opened to the public. Many things were tried to stop the bridge from moving. None of these things worked. The bridge's main span collapsed under  winds on the morning of November 7, 1940.