State Rep. Ron Maag (R-Harlan Twp.) participated by pushing the button to set off the ordnances.
The demolition appeared to go as planned, according to the video of the event provided by the Ohio Department of Transportation.
That leaves two remaining sections on the northbound side to be demolished at a later date, according to ODOT.
Half of the new structure was completed and opened to traffic on the northbound side in November 2013.
The entire project is expected to be finished by September 2016, according to ODOT.
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