It has been long known that the bridges built during the original Interstate building program had flaws. I have no doubt that the bridge (indlucing the gussets) fully met design standards WHEN IT WAS BUILT. Since then we have learned a LOT more and the design standards have changed.
I tend to agree with you. In 1988, when the four shoulders were converted to traffic lanes, all calculations concerning the structural integrity of the bridge should have been done again. Why was this "design flaw" not spotted then?
1988?? Well then, its George H.W. Bush’s fault!
Excellent point!