I 35w mississippi river bridge university of maryland. A report of research, education, and technology transfer activities of the intelligent transportation systems institute at the university of minnesota for fiscal year 20082009. On august 1, 2007, during the evening rush hour, a major failure caused the bridge to fall down. There was no known failure in the actual materials of the i35w bridge many other factors played into the failure, but. 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 traffic and behavioral effects of the i35w mississippi. On the fateful evening of wednesday, august 1st, 2007, the interstate highway bridge i 35w over the mississippi river in minneapolis, minnesota catastrophically failed resulting in deaths and 145 injuries national transportation safety board, 2007. The i 35w saint anthony falls bridge crosses the saint anthony falls of the mississippi river in minneapolis, minnesota in the u.
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. The traffic and behavioral effects of the i 35w mississippi river bridge collapse. The design details of the i35w mississippi river bridge, major bridge failures, and its impact on future bridge designs, monitoring and testing, are discussed. 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. Kapil khandelwal, university of notre dame introduction research into the study of the collapse of steel bridges has become popular with the recent i. It had a catastrophic failure during the evening rush hour on. The i35w minnesota river bridge will remain open to three lanes of traffic one mnpass lane during peak travel times in both directions for the duration of the project. Located in minneapolis, minnesota, the bridge was one of the busiest in the state allowing a daily average of 141,000 vehicles across in 2004. Traffic flow and road user impacts of the collapse of the. Minnesota officials were warned as early as 1990 that the bridge that collapsed into the mississippi river was structurally deficient, yet they relied on patchwork repairs and steppedup.
During the weekday evening rush hour on august 1, 2007, the structure and the deck collapsed into the river, onto the river bank below, and. In addition to the human tragedy that it caused, the bridge failure also impacted. The bridge was 1,907 feet long, had 14 spans, and by 2007 carried a daily average of 140,000 total vehicles. 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 mississippi river in minneapolis, minnesota, united states. The interstate highway bridge i 35w over the mississippi river in minneapolis, minnesota, collapsed suddenly at 6. The replacement of the collapsed i35w mississippi river bridge crosses the mississippi river at the same location as the original bridge, and carries northsouth traffic on i35w. Completed in 1967, it was one of the busiest bridges in the state, carrying over 140,000. Aerials of minneapolis i35w mississippi river bridge.
It was constructed on an accelerated schedule, because of the highways function as a vital link for carrying commuters and truck freight. Traffic volume maps annual average daily traffic pdf. Traffic flow and road user impacts of the collapse of the i. Aug 02, 2007 minnesota officials were warned as early as 1990 that the bridge that collapsed into the mississippi river was structurally deficient, yet they relied on patchwork repairs and steppedup. In the bridge, iw over mississippi river, fatigue evaluation and. In a deck configuration, traffic travels on top of the main structure. Thousands of vehicles drove across it every day, but no one imagined that a mistake in the bridge s design, made over forty years prior, would have such disastrous consequences on one summer evening in august of 2007. Building the twin cities interstate system pdf report.
I35w bridge collapse and response minneapolis, minnesota. Ence710 university of maryland truss bridge examples of the three common travel surface configurations are shown in. The design details of the i 35w mississippi river bridge, major bridge failures, and its impact on future bridge designs, monitoring and testing, are discussed. Aug 12, 20 video of a military videographer shooting aerial footage of the minneapolis bridge collapse. The twin cities was reminded once again on that fateful august evening in 2007 that the mighty mississippi river runs through its core. At the time of the collapse, traffic was congested from normal rush hour traffic and fans headed to the twins game. Listen remembering the 35w bridge collapse an aerial view shows the collapsed i35w bridge aug. Gate bridge disaster in 1970, the world was due for another major collapse in 20001. Friday marks 7 years since i35w bridge collapse wcco. This is report 166 of investigation and analysis of major fire incidents. During the evening rush hour on august 1, 2007, it suddenly collapsed, killing people and injuring 145. I35w bridge collapse, travel behavior, travel survey 1 introduction on august 1, 2007, the collapse of the i35w bridge over the mississippi river in minneapolis abruptly interrupted the usual route of about 140,000 daily vehicle trips, which substantially disturbed regular tra c. Thousands of vehicles drove across it every day, but no one imagined that a mistake in the bridges design, made over forty years prior, would have such disastrous consequences on one summer evening in august of 2007.
The collapse of the i 35w mississippi river bridge august 1, 2007 abruptly disrupted habitual routes of about 14,000 daily trips and forced even more travelers to adapt their travel pattern to evolving network conditions. The entire truss was recovered from the river to study the causes of failure. Dec 03, 20 i 35w mississippi river bridge collapse. The i35w saint anthony falls bridge crosses the saint anthony falls of the mississippi river in minneapolis, minnesota in the u. Aug 01, 2017 listen remembering the 35w bridge collapse an aerial view shows the collapsed i 35w bridge aug. The i 35w mississippi river bridge officially known as bridge 9340 was an eightlane, steel truss arch bridge that carried interstate 35w across the mississippi river in minneap. On august 1, 2007, the collapse of the i 35w bridge over the mississippi river in minneapolis abruptly interrupted the usual route of about 140,000 daily vehicle trips, which substantially disturbed regular traffic flow patterns on the network. A view a detailed profile of the structure 304997 including further data and descriptions in the emporis database. 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. Aug 01, 2014 friday marks seven years since the i 35w bridge in minneapolis collapsed, killing people and injuring 145 others. Highway 35w i35w, national bridge inventory structure no. I35w mississippi river bridge wikimili, the best wikipedia. 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.
August 1, shortly after 6 pm, the iw bridge collapses with motor that resulted in undersized gusset plates on some of bridge s main trusses. I35w bridge collapse and response us fire administration fema. The structure and deck collapsed into the river and onto the riverbanks below, the south part toppling 81 feet 25 m eastward in the process. 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. Friday marks 7 years since i35w bridge collapse wcco cbs. The bridge was owned by the federal government, and was operated and maintained by the state of minnesota. The collapse of the i 35w mississippi river bridge in 2007 the collapse of a section of the lake street marshall bridge in 1989 this disambiguation page lists articles associated with the same title. I 35w collapse free download as powerpoint presentation. The i 35w mississippi river bridge is an eightlane steel truss arch bridge that carries interstate 35w across the mississippi river in minneapolis, minnesota. I35w mississippi river bridge simple english wikipedia. Collapse investigation, final report, november 2008. On august 1st, 2007, the i35w bridge crossing the mississippi river collapsed.
Unless the similarlooking bridge was found to have gusset plates that are too thin, such a bridge would not be at risk for an i35w type of failure and subsequent collapse. 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. I35w highway bridge collapse uiowa college of engineering. Old i35wmississippi river bridge, minneapolis 304997.
The tra c and behavioral e ects of the i35w mississippi. The interstate highway bridge i35w over the mississippi river. On the fateful evening of wednesday, august 1st, 2007, the interstate highway bridge i. Friday marks seven years since the i35w bridge in minneapolis collapsed, killing people and injuring 145 others. The bridge contains multigirder continuous approach spans on both the north and south ends. The i35w interstate 35 west bridge over the mississippi river in minneapolis opened to traffic in 1967.
At that point, five people were confirmed dead and 8 others missing. Failure in structural steels and overview of i35w bridge collapse jack przywara, university of notre dame advisor. The opening on september 18 meant a designbuild delivery in 11 months while achieving the quality standards set for a long bridge life. 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. In 1967, the interstate 35w mississippi river bridge in minneapolis. The fact that a bridge looks like the i 35w bridge should not justify a demolition and replacement project. The i35w mississippi river bridge called bridge 9340, was a 1907foot long steel truss arch bridge carrying eight lanes of interstate 35w across saint anthony falls. Study of the i 35w highway bridge collapse mechanism miguel a. The i 35w minnesota river bridge will remain open to three lanes of traffic one mnpass lane during peak travel times in both directions for the duration of the project. On august 1, 2007, the collapse of the i35w bridge over the mississippi river in minneapolis abruptly interrupted the usual route of about 140,000 daily vehicle trips, which substantially disturbed regular traffic flow patterns on the network. Ence717 university of maryland truss bridge examples of the three common travel surface configurations are shown in the truss type drawings below. The i35w mississippi river bridge is an eightlane steel truss arch bridge that carries interstate 35w across the mississippi river in minneapolis, minnesota. It was planned and is maintained by the minnesota department of transportation mndot. Old i 35wmississippi river bridge is a bridge in minneapolis, minnesota, u.
University of minnesota, area businesses and north suburban destinations. The ntsb cited a design flaw as the likely cause of the collapse, noting that a toothin gusset plate ripped along a line of rivets, and additional weight. The tenlane bridge replaced the i35w mississippi river bridge, which collapsed on august 1, 2007. On august 1, 2007, the i35w bridge over the mississippi river in minneapolis, minnesota collapsed during evening rush hour, plummeting into the river and onto the concrete embankment below. For example, the 2007 collapse of the i 35w mississippi river bridge at minneapolis was attributable to the failure of an undersized gusset plate hao 2010.
Truss bridges and truss bridge of i 35w mississippi collapse. The tragic collapse of the bridge caused substantial loss of life and injury. The i35w bridge collapse was shocking in many ways, and it was made all the more dramatic by the fact that the nations largest river was involved in the crossing. Study of the i35w highway bridge collapse mechanism miguel a. Failure in structural steels and overview of i35w bridge. After the collapse, the bridge was lodged in the river where, under minnesota statute, the hennepin county sheriffs office water patrol has jurisdiction. The i35w mississippi river bridge was an eightlane, steel truss arch bridge that carried.
The i35w bridge over the mississippi river in minneapolis, minnesota, collapsed suddenly on august 1, 2007. The 456footlong center span of the deck truss portion fell into the mississippi river. The interstate highway bridge i35w over the mississippi river in minneapolis, minnesota, collapsed suddenly at 6. The collapse of the i35w mississippi river bridge august 1, 2007 abruptly disrupted habitual routes of about 14,000 daily trips and forced even more travelers to adapt their travel pattern to evolving network conditions. On the fateful evening of wednesday, august 1st, 2007, the interstate highway bridge i35w over the mississippi river in minneapolis, minnesota catastrophically failed resulting in deaths and 145 injuries national transportation safety board, 2007. Request pdf i35w bridge collapse the i35w bridge over the mississippi river in minneapolis, minnesota, collapsed suddenly on august 1. The fact that a bridge looks like the i35w bridge should not justify a demolition and replacement project. Ence710 university of maryland truss bridge examples of the three common travel surface configurations are shown in the truss type drawings below. Video of a military videographer shooting aerial footage of the minneapolis bridge collapse. The i35w mississippi river bridge officially known as bridge 9340 was an eightlane, steel truss arch bridge that carried interstate 35w across the mississippi river in minneap. The collapse, on august 1, 2007, of the i35w bridge over the mississippi river in minneapolis, abruptly interrupted the usual route of about 140,000 daily vehicle trips and substantially disturbed the. Scenes include several angles from an aerial view of the collaps. Pdf i35w mississippi river bridge failure is it a wake up call.
The tenlane bridge replaced the i 35w mississippi river bridge, which collapsed on august 1, 2007. Highway 35w i 35w, national bridge inventory structure no. Highway bridge in minneapolis, minnesota, collapses nachricht. If you live near the minnesota river bridge you may hear noise as crews continue work on both sides of the river. Pdf i35w mississippi river bridge failure is it a wake. Home publications annual reports 2009 research collapse of the i35w mississippi river bridge. The traffic and behavioral effects of the i35w mississippi river bridge collapse. The minnesota state department of transportation has chosen the expensive bid to replace the collapsed interstate bridge. Ten years ago, the interstate 35w bridge over the mississippi river in downtown minneapolis collapsed, sending cars, trucks and even a school bus that were crawling over it in bumpertobumper. Pdf the traffic and behavioral effects of the i35w. The bridge opened in 1967 and was minnesotas third busiest, c. Unless the similarlooking bridge was found to have gusset plates that are too thin, such a bridge would not be at risk for an i 35w type of failure and subsequent collapse. Thirteen people died and 145 more were injured when the freeway bridge buckled and fell.
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