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After a year of environmental studies and input from community, state and federal agencies, KYTC and INDOT determined that a method called “superstructure replacement” offered the fastest and most cost-effective way to build a safe new bridge, while having the least impact on the historic towns and the natural environment. Superstructure replacement involves building a new steel truss atop the existing piers, which will be brought up to modern standards.
Due to the use of innovative bidding, design and construction methods, the bridge will close for a total of only 10 days during construction, rather than the anticipated year-long closure.
Using a construction method called “truss sliding,” a new 2,427-foot-long truss will be moved along steel rails and plates and “slide” into place atop the existing piers, which will be rehabilitated. (Click here to view a similar truss sliding bridge project.) The new span is expected to be open to traffic in 2013, making it the fastest modern-day bridge built across the Ohio River.
The new bridge – in its temporary location – is open to traffic. The first brief bridge closure took place April 25-28, 2012. The next bridge closure is expected to last 7 days during the bridge slide in early 2014. There is no precise date yet for the bridge slide.