Aspire Magazine had a follow up article [pdf], where they discussed the repair work that resulted from this accident.

The National Transportation Safety Board (NTSB) today announced that a serious design flaw was found in some of the gusset plates on the I-35W bridge in Minneapolis, which collapsed on August 1, 2007. As a result, the NTSB issued a recommendation that the Federal Highway Administration (FHwA) require bridge owners to verify that the stress levels in all structural elements, including gusset plates, remain within applicable requirements whenever planned modifications or operational changes may significantly increase stresses. This would apply to all non-load-path-redundant steel truss bridges within the National Bridge Inventory.girl boarding school
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The collapse of this bridge led to 13 deaths, 145 injuries and serious disruption to the lives of thousands of motorists and residents in the region. ASCE again extends it condolences to the victims of this tragedy. As a profession, it is our obligation to learn all that we can from such events. ASCE will continue to monitor the NTSB’s investigation and will incorporate the recommendations and lessons learned into our future technical and professional policies and standards.

ASCE urges its members to review the NTSB’s report and recommendations.

NTSB Safety Recommendation Letter

FHwA Turner-Fairbank Highway Research Center Interim Report

Adequacy of the U10 & L11 Gusset Plate Designs for the Minnesota Bridge No. 9340 (I-35W over the Mississippi River)

Sincerely,

�

David G. Mongan, P.E., F.ASCE

President