Structuresblog

Via ASCE espana

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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