Top Ten Construction Failures 10.) Tower of Pisa No list of construction failures would be complete without this iconic engineering mishap. A mere three meter foundation and weak subsoil contributed to a nearly 5.5 degree lean until preservation crews were called in to help lessen the instability. The tower’s top is still more than 3.9 meters off center. 9.) Tacoma Narrows Bridge Opened in1940, the bridge was the third longest suspension bridge in the world before it collapsed in dramatic fashion just four months later. Sustained 40 mph winds caused a phenomenon known as aeroelastic flutter, resonating violently with the structure until the roadway broke apart and fell hundreds of feet into the gorge below. 8.) Hubble One of the crowning achievements of the space age, the Hubble Space Telescope launched with a defective mirror that severely inhibited the quality of the incredibly expensive instrument’s imaging capabilities. Several servicing missions had to be fl...