John Hennessy III,
P.E.
Aaron M. Renn is The Urbanophile, an opinion-leading urban affairs analyst, entrepreneur, speaker, and writer on a mission to help America’s cities thrive in the 21st century.
“Fundamentally, we have to take a hard look in the mirror and realize that, to some extent, the systems that we have in place in America are a reflection of the values of the people who live here…The public needs to take a look in the mirror and say this is what we’ve chosen as a society.”
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The new bridge will be constructed adjacent to the existing bridge and traffic will be diverted to the new bridge in its temporary location. The old structure was demolished and the new bridge was slid into place. Bridge slide technology greatly reduces the amount of time a bridge is out of service. M-50 was closed and detoured for only two weekends (during demolition and during the slide), as opposed to a multiple-month closure typically associated with a traditional bridge replacement.
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Crews demolished the remaining steel skeleton of the 1959 Innerbelt Bridge in Cleveland, Ohio.
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In August 2014 we completed replacement of the Barton Corner Bridge, which carries four lanes of I-95 plus two auxiliary lanes at a busy interchange with Route 2 on the Warwick/West Warwick line. Using accelerated bridge construction, we built two halves of the bridge on land adjacent to the overpass, and then moved them into place. This enabled us to build the bridge much faster compared with conventional construction methods, which would have taken twice the time. This approach also allowed us to do the work with no impact to Interstate traffic prior to installation.
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PENNSYLVANIA DEPARTMENT OF TRANSPORTATION
With the P3 approach, we can replace hundreds of these bridges more quickly, save money and minimize the impact on the traveling public. SD bridges are not unsafe but pose a serious problem that jeopardizes our ability to grow economically and create jobs. This initiative, in conjunction with Pennsylvania’s new comprehensive transportation funding law that Corbett signed on Nov. 25, 2013, will bring much needed investment to the state’s bridges.
This is a timelapse video of the GRS-IBS construction of the Route B bridge over Business Loop 70 in Columbia, MO. The video is of construction to date (8-25-14) on the bridge.
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An update on the progress of the Gerald Desmond Bridge Replacement Project and the challenges facing the engineering and construction team.
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A new, rocking, pre-tensioned concrete bridge support system has been developed by the University of Washington that reduces on-site construction time and minimizes earthquake damage. The 52-ton, 70-foot-long concrete bridge, built atop three 14- by 14-foot, 50-ton-capacity hydraulically driven shake tables at the University of Nevada, Reno, was shaken in a series of simulated earthquakes, culminating in the large ground motions recorded in the deadly and damaging 1995 magnitude 6.9 earthquake in Kobe, Japan.
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Normally, bridge demolition is a fairly fast process that can even allow for traffic to cross one side of the bridge during work. With the M-50 bridge, the situation was much different. Crews had to close the entire bridge due to the way it was built.
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