Lack of calculations blamed for minneapolis bridge collapse. This article details a forensic engineering analysis that we conducted to determine the reason for the structural failure of the i 35w bridge collapse. Listen a new book examines the i35w bridge collapse, 11 years later kimberly j. Lessons learned from the 35w bridge collapse the current. There was no known failure in the actual materials of the i 35w bridge many other factors played into the failure, but. Economic impacts of the i35w bridge collapse he i35w mississippi river bridge provided direct access to downtown minneapolis, the university of minnesota, area businesses and north suburban destinations for more than 140,000 vehicles each day. The bridge opened in 1967 and was minnesotas third busiest, carrying 140,000 vehicles daily.
As of summer 2008, the cause of the i 35w bridge collapse remains under investigation, and the final reports have yet to be written. In fact, the minneapolis bridge was completed just a few months before the point pleasant bridge failure. Fire administrations regular examination of fires and other disasters in an effort to distill and disseminate lessons that can. At a rating of 50, the i35w bridge was actually rated the highest in that category. Economic impacts of the i 35w bridge collapse he i 35w mississippi river bridge provided direct access to downtown minneapolis, the university of minnesota, area businesses and north suburban destinations for more than 140,000 vehicles each day. Emergency communications during the minneapolis bridge. The method demonstrated is mnemonics, and the author shows how that approach, already widely in use in naming agreements and providing clues to their details, can be applied to every phase of the game. It had a catastrophic failure during the evening rush hour on. The tragic collapse of the bridge caused substantial loss of life and injury. Failure in structural steels and overview of i35w bridge.
Jul 31, 2007 the interstate 35w bridge over the mississippi river collapsed this evening, plunging dozens of vehicles into the water, killing seven people and injuring more than 60. The memorial is located off west river parkway, in minneapolis. And the national transportation safety board determined that it was a design flaw, and not deferred maintenance, neglect, or other problems, that caused the 35w bridge to collapse. Reported evidence suggests that failure of gusset plates initiated the collapse of the i35w bridge in minneapolis, minnesota. Bridge collapses often result in a large number of casualties, as well as negative social d economic consequences, as was seen in the i 35w bridge collapse in minneapolis, mn, in 2007 1. I35 bridge collapse analysis writing down goals is a key starting point for any root cause analysis. I35w bridge collapse minneapolis, mn august 1, 2007. For official information about the bridge as it existed prior to the collapse, please contact the minnesota department of transportation. The report, i 35w bridge collapse and response, is part of the u. Better bridge with a better memory master bridge series. Brown took a picture after surviving the collapse of i35w in 2007. The silver bridge opened in 1928 and was only in operation for 39 years before the tragedy happened in 1967.
The i35w bridge in minneapolis collapsed and bolander was contracted to remove the bridge components and piers to two feet below grade. Mar 28, 2020 the busy interstate 35w bridge over the mississippi river in downtown minneapolis, minnesota, collapsed at the peak of rush hour on wednesday, august 1, 2007. I35w bridge collapse local technical assistance program. For new engineers, the 2007 collapse of the interstate 35w bridge in minneapolis has become more than a textbook case of design failure. To mark the 10year anniversary of the i 35w bridge collapse, city pages is reposting this story, originally published two weeks after the collapse. I 35w bridge collapse minneapolis, mn august 1, 2007. The i 35w bridge in minneapolis collapsed and bolander was contracted to remove the bridge components and piers to two feet below grade. Study of the i35w highway bridge collapse mechanism.
A new book examines the i35w bridge collapse, 11 years later. Kapil khandelwal, university of notre dame introduction research into the study of the collapse of steel bridges has become popular with the recent i. I35 bridge collapse thinkreliability, case studies. The i35w saint anthony falls bridge subject of the may 2008 pm cover story was open to traffic months after its predecessors collapse, three months ahead of. I35w bridge collapse journal of bridge engineering vol.
Failure in structural steels and overview of i35w bridge collapse jack przywara, university of notre dame advisor. The national transportation safety board ntsb issues their report. The interstate 35w bridge over the mississippi river collapsed this evening, plunging dozens of vehicles into the water, killing seven people and injuring more than 60. The 2007 collapse of the i35w bridge in minneapolis is just one more recent example. Bridges built since then are designed with greatly advanced technology, but there still is the danger of collapse. Aug 01, 2018 listen a new book examines the i35w bridge collapse, 11 years later kimberly j. The minnesota bridge collapse, 5 years later st anthony. Major freeway bridge collapse i35w bridge collapse august 1, 2007. He provides a wellwritten, insightful narrative that exposes the human toll of this tragedy and demonstrates the resiliency of the human spirit and the difficult struggles that continue for. I 35w bridge collapse the final verdict december, 2008.
Remembering the i35w bridge collapse 10 years later. I35w bridge collapse applied science international, llc. The interstate highway bridge i35w over the mississippi river in minneapolis, minnesota, collapsed suddenly at 6. The i 35w mississippi river bridge officially known as bridge 9340 was an eightlane, steel truss arch bridge that carried interstate 35w across the saint anthony falls of the mississippi river in minneapolis, minnesota, united states. The particular gusset plates were at a panel point designated as u10. The i35w bridge was one of minnesotas busiest, carrying 140,000 cars a day over the mississippi river. This book is a compelling account of garrett eblings own exhausting journey of physical and emotional recovery after surviving the i35w bridge collapse.
Problem the i35w bridge in minneapolis, minnesota was built in 1967. New i35w bridge wins national design honor the new interstate 35w bridge over the mississippi river has been named a project of the year by the. Minneapolis interstate 35w bridge collapse minnesota. Ntsb investigators concluded that the root cause of the minneapolis bridge crash was a lack of calculations to determine the thickness of the bridges gusset plates. May 07, 2020 a bridge is rated on a scale of 0 to 100. What is the legacy of the 35w bridge collapse on minnesota. The 35w bridge remembrance garden is a memorial commemorating the victims and survivors of the i 35w bridge collapse. The fact that a bridge is deficient does not imply that it is likely to collapse or that it is unsafe. Collapsed a survivors climb from the wreckage of the i35w. Film footage archival footage of the i 35w bridge under construction in 1967 from the minnesota deptartment of transportation records. Eastern time today, traffic began flowing once again, led by vehicles driven by the first responders to the disaster, which killed people in just a few thunderous. Minnesota bridge reopens a year after collapse the new york.
From there, the key is to ask why something happened and we can trace the incidents causes to create a cause map, an extremely effective root cause. On august 1, 2007 the interstate highway 35w bridge going over the mississippi river collapsed during afternoon rush hour. Mar 03, 2014 a disaster brought awareness but little action on infrastructure video the collapse of the i 35w bridge in minneapolis in 2007 killed people and focused attention on the state of bridges across. Aug 01, 2017 listen remembering the 35w bridge collapse an aerial view shows the collapsed i 35w bridge aug. The eightlane bridge was minnesotas third busiest, carrying 140,000 people a day. The i 35w bridge over the mississippi river in minneapolis, minnesota, collapsed suddenly on august 1, 2007. These are historical documents created before or during construction. From there, the key is to ask why something happened and we can trace the incidents causes to create a cause map, an extremely effective root cause analysis tool. Bridge background bridge completed 1967 1907 feet long 3 span continuous truss main span 456 feet adt 141,000 sufficiency rating 50. Approximately 1,000 ft of the 1,907ftlong bridge fell to the water and ground, resulting in fatalities and 145 injuries, with 111 vehicles involved in the collapse. Research reports university of minnesota center for. The schedule below includes the dates the i 35w bridge is lit yearly. I35w bridge collapse and response minneapolis, minnesota august 1, 2007.
A new book examines the i35w bridge collapse, 11 years. Problem the i 35w bridge in minneapolis, minnesota was built in 1967. Minneapolis interstate 35w bridge collapse minnesota issues. There was no known failure in the actual materials of the i35w bridge many other factors played into the failure, but. I35w bridge failure turns into powerful teaching tool. The schedule below includes the dates the i35w bridge is lit yearly. The entire truss was recovered from the river to study the causes of failure.
Aug 01, 2017 the i 35w bridge was one of minnesotas busiest, carrying 140,000 cars a day over the mississippi river. Collapsed a survivors climb from the wreckage of the i. After the collapse, the bridge was lodged in the river where, under minnesota statute, the hennepin county. I35w bridge collapse journal of bridge engineering. On august 1, 2007, adjacent to downtown minneapolis, a 40yearold overpass of i35w collapsed during evening rush hour over the. The bridge was owned by the federal government, and was operated and maintained by the state of minnesota. At a rating of 50, the i 35w bridge was actually rated the highest in that category. A disaster brought awareness but little action on infrastructure video the collapse of the i35w bridge in minneapolis in 2007 killed people and. The report, i35w bridge collapse and response, is part of the u.
Listen remembering the 35w bridge collapse an aerial view shows the collapsed i 35w bridge aug. Jul 09, 2012 this book is a compelling account of garrett eblings own exhausting journey of physical and emotional recovery after surviving the i 35w bridge collapse. Collapse of i35w highway bridge minneapolis, minnesota, august 1, 2007. Listen remembering the 35w bridge collapse an aerial view shows the collapsed i35w bridge aug. Kapil khandelwal, university of notre dame introduction research into the study of the collapse of steel bridges has become popular with the recent i35w bridge collapse in minneapolis, minnesota. The bridge was 1,907 feet long, had 14 spans, and by 2007 carried a daily average of 140,000 total vehicles.
Minnesota bridge reopens a year after collapse the new. This work was conducted under the supervision of the ntsb national transportation and safety board, mndot bridge department and independent engineers. This work was conducted under the supervision of the ntsb national transportation and safety board, mndot. This note briefly summarizes an analysis based on original design drawings, an investigation of material evidence provided by the national transportation safety board ntsb, and a fullscale load rating of the bridge superstructure.
This article details a forensic engineering analysis that we conducted to determine the reason for the structural failure of the i35w bridge collapse. The bridge collapse was an intense and localized event that generated a peak load of traffic that was nearly twice the normal volume of emergency communications traffic. Rybaks office said monday that no public event is planned for this aug. Its been 10 years since a bridge carrying interstate 35 west over the mississippi river in downtown minneapolis collapsed, killing people and injuring 145 more. However, traffic was within normal bounds within seven hours, thus, the duration of the event was relatively brief. The i35w bridge over the mississippi river in minneapolis, minnesota, collapsed suddenly on august 1, 2007. The i35w mississippi river bridge officially known as bridge 9340 was an eightlane, steel truss arch bridge that carried interstate 35w across the saint anthony falls of the. The deck truss portion of the i35w highway bridge in minneapolis, minnesota collapsed on august 1, 2007 while roadwork was underway on the bridge. Robles lora abstract the deck truss portion of the i 35w highway bridge in minneapolis, minnesota collapsed on august 1, 2007 while roadwork was underway on the bridge. Study of the i 35w highway bridge collapse mechanism miguel a. Considered one of the worst 10 bridge collapse events in u.
Collapse of i 35w highway bridge minneapolis, minnesota, august 1, 2007. The busy interstate 35w bridge over the mississippi river in downtown minneapolis, minnesota, collapsed at the peak of rush hour on wednesday, august 1, 2007. A computational study of the i35w bridge collapse october 2009 6. Minneapolis i35w bridge collapse failure case studies. Bridge collapses often result in a large number of casualties, as well as negative social d economic consequences, as was seen in the i35w bridge collapse in minneapolis, mn, in 2007 1. Approximately 1,000 ft of the 1,907ftlong bridge fell to the water and ground, resulting in fatalities and 145.
Aug 01, 2012 the i 35w saint anthony falls bridge subject of the may 2008 pm cover story was open to traffic months after its predecessors collapse, three months ahead of schedule. This tragic story is still developing but we will be posting resources and information in the coming days to provide a scientific perspective on this remarkable disaster. A disaster brought awareness but little action on infrastructure. Both the point pleasant and the minneapolis i 35w bridge had three spans that all fell together. The interstate highway bridge i 35w over the mississippi river in minneapolis, minnesota, collapsed suddenly at 6. New i 35w bridge wins national design honor the new interstate 35w bridge over the mississippi river has been named a project of the year by the. I 35w bridge collapse and response minneapolis, minnesota usfatr166august 2007. It means they must be monitored, inspected and maintained. Some colleges are using remnants of the wreckage to hammer. At that point, five people were confirmed dead and 8 others missing.
I35w bridge collapse the final verdict december, 2008. This tragic story is still developing but we will be posting resources and information in the coming days to provide a scientific. Sep 18, 2008 but this is the brandnew span that has finally reconnected i 35w, which was severed at the mississippi river a little more than a year ago when the old bridge collapsed. A rating of 50 or below is eligible for federal funds for replacement. Archival footage of the i35w bridge under construction in 1967 from the minnesota deptartment of transportation records. Both the point pleasant and the minneapolis i35w bridge had three spans that all fell together. To mark the 10year anniversary of the i35w bridge collapse, city pages is reposting this story, originally published two weeks after the collapse. Study of the i35w highway bridge collapse mechanism miguel a.
The events intensity and duration suggests that emergency. The investigation into the cause of the disaster took 16 months, with the final report being published on december 19, 2008. Robles lora abstract the deck truss portion of the i35w highway bridge in minneapolis, minnesota collapsed on august 1, 2007 while roadwork was underway on the bridge. Department of civil engineering university of minnesota 11. So far, all seems to be well on the online traffic cameras trained on the bridge, an unusual treat for minneapolis since the collapse, because the loss of the crucial i35w artery produced worst congestion in the city in four years and while the new bridge has won plaudits for its elegant simplicity, it is also packed with new features, as the associated press reported. A computational study of the i 35w bridge collapse october 2009 6.
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