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The nightmare of every design engineer, starting all over. Properly done it cost time and money but wouldn't compromise safety. Here AP report: <a href="http://www.miamiherald.com/news/article206070889.html">http://www.miamiherald.com/news/article206070889.html</a> The article states that a number of engineers found the move of the pylon an invitation for errors. And they quote a Duke University civil engineering professor saying quote:even seemingly minor changes in a bridge's design can lead to failures. and: quote: "Once a design is completed, subsequent modifications tend to be suggested and approved without the full care that went into the original design. This has happened time and again in bridges and other engineering structures," he said. I know from my experience that minor changes might be analysed only locally overlooking consequences on the whole system. Here our two-person integrity (four-eye principle) helps a lot. But these were not minor changes. This should have been a completely new structural design including analysis and drawings. Time will tell if it was handled this way. At least the company got more than $200,000 for the redesign. This change explains I think, why one transport support had to be moved inward. In a different video I heard that the workers had realized that one post-tensioning bar in the last diagonal strut (at the support) had almost come loose. I wasn't able to verify through other sources yet. I don't link this video as it contains faults explaining post-tensioning. I'm not surprised by the loose post-tensioning bar. It depends on the ratio of tensile force during transport, compressive force in final position and the primary post-tensioning force. I'm still unsure if the post-tensioning of the end diagonal was really needed for the final position. I hope the NTSB report will show. Regards,Volker Edit: I just found this design drawing in the NTSB Twitter Newsroom: <a href="https://pbs.twimg.com/media/DYhaJGMVwAElEnv.jpg:large">https://pbs.twimg.com/media/DYhaJGMVwAElEnv.jpg:large</a> <div style="width:1px;height:1px;color:#000000;font:normal normal normal normal 10pt sans-serif;text-align:left;text-transform:none;overflow:hidden;"> Read more here: http://www.miamiherald.comd/news/article206070889.html#storylink=cpy</div> <div style="width:1px;height:1px;color:#000000;font:normal normal normal normal 10pt sans-serif;text-align:left;text-transform:none;overflow:hidden;"> Read more here: http://www.miamiherald.com/news/article206070889.html#storylink=cpy</div>
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