- #Where did the pedestrian bridge collapse drivers
- #Where did the pedestrian bridge collapse full
- #Where did the pedestrian bridge collapse series
The NTSB has also been unequivocal in stating that Louis Berger, as design checker, should have noticed this error. Post-collapse calculations showed that the load demand on the node was twice that designed. The NTSB has been unequivocal in stating that Figg’s load and capacity calculation errors at this key node probably led to the failure. Investigators have overwhelmingly concluded that the trigger for the collapse was punching shear failure at the node where the end vertical and diagonal truss members met. This triggered the significant cracking which should have given warning that collapse was imminent. This induced unexpected stresses and strains in the structure which were exacerbated when the end diagonal truss member was de-stressed after it was positioned.
#Where did the pedestrian bridge collapse full
In the casting yard there was full contact support across the deck and its two ends, yet while resting on the pier the shims were placed either side of the central truss – meaning there was no direct support under the truss location.
The FIU bridge in Miami-Dade County was being constructed by Magnum Construction Management (MCM) under a design and build contract when it collapsed.Ī National Transportation Safety Board report into the collapse concluded that design calculation errors made by MCM’s consultant Figg Bridge Engineers were ultimately to blame. But failures by the independent design checker, client, contractor and on-site construction supervisor also contributed to the disaster. The cables were to support a 862t deck post tensioned prestressed concrete deck structure with a bottom flange serving as the walkway and a top flange providing cover from bad weather.Īt time of collapse, the 53m long deck structure had been installed over the main highway, but the back span, spanning over a river, the pylon and the cables were yet to be installed. The bridge was to be cable stayed with one central pylon. The cable stayed bridge was being built in the city of Sweetwater as a safety measure so that students did not have to cross the busy highway to get to and from its Modesto A.
#Where did the pedestrian bridge collapse drivers
It, along with I-295 and the Baltimore-Washington Parkway, takes drivers to the Capital Beltway, or I-495.Three years ago today, the under construction Florida International University (FIU) pedestrian bridge collapsed onto a Florida highway, crushing cars and killing six people and injuring 10 others. The Informer could not secure an interview with the council member.ĭC-295, also known as the Anacostia Freeway, starts at the split between I-695 and I-295 at the 11th Street Bridge and goes along the Anacostia River to the D.C-Maryland border. Gray (D-Ward 7) called for a full investigation into the circumstances of the bridge collapse and cited the need for funding infrastructure upgrades in communities in the eastern part of the District. Still, authorities remain cautious in exclusively blaming the bridge’s structural challenges on the collapse, although they did credit the truck with exacerbating decades of wear and tear. But a report then surfaced which revealed that the bridge received a “poor” rating one month ago. Meanwhile, in the District, DC Fire and EMS reported at least five injuries from the bridge collapse near the Benning Road/Foote Street exit of DC-295.Īuthorities initially mentioned that the bridge passed a February inspection.
#Where did the pedestrian bridge collapse series
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