I-35 Bridge in Miinneapolis, Minnesota Collapsed and Sent 80 Souls to Their Death

Design errors can be easily avoided by reviewing and correcting the entire design or design. The highway accident report issued by the National Traffic Safety Commission (NTSB) explained that the possible cause of the collapse was caused by the failure of the U10 gusset node at the end of the main span of the truss above the Mississippi River. Calculation shows how U10 gussets should be thicker so that U10 gussets are weak against the weight it must withstand, so that it can withstand more weight.

After the collapse of the Mississippi River Bridge in Minnesota State I-35 W in August 2007, delinquency in the maintenance and management of national roads and bridges became a problem of transportation funds. Due to this collapse, tax revenues in Minnesota province increased and other state measures such as bridge repair and the Massachusetts State Accelerator Bridge Project accelerated, but after the discussion the federal funds did not increase. In 2013, the I-5 Skagit River Bridge collapsed due to a collision with a skyscraper track, emphasizing the "broken important" bridge in which complete collapse occurred due to breakage of only one structural member. According to the National Bridge List, if there is no preventive maintenance, at least 60 thousand bridges over 20 feet in the United States will deteriorate. In December 2008, 72,868 bridges in the United States (12.1%) were classified as "structural flaws" and an estimated $ 48 billion was repaired.

Strangely another incident was found that Mossman was seen at the place where the bridge fell. At the peak of August 1, 2007, the bridge of Interstate 35 of Minneapolis, Minnesota gave way to that center. 13 people died in the autumn and nearly 145 people were injured. Reporting the trickle, characters like Mossman began to appear near the bridge approximately one month before the crash. Skeptics considers this creature as a squirrel or a crane, but some believers in Mossman infer that Mosman is not a liar, but a supernatural existence. Can he warn of the coming danger? Or is he preparing for the collapse of the bridge?

Because it is the country's first aluminum painted bridge, the US Highway 35 Bridge called "Silver Bridge" is the main transport route between West Virginia and Ohio. At peak time, the bridge suddenly collapsed into the Ohio River, and 75 cars were flooded. 46 people were killed in this tragedy, 9 people were seriously injured. The cause of breakage is stress corrosion and corrosion fatigue. A few years before the collapse, a small crack appeared on the suspended chain of the bridge, and the crack grew steadily as time passed. However, the inspector of the bridge did not notice it. Because this technique did not allow inspectors to see cracks.