Hydrodemolition keeps Liberty Tunnel project on schedule The Pennsylvania Department of Transportation selected Hydrodemolition Surface Preparation for an $18.8 million restoration of Pittsburgh’s Liberty Tunnels since time was of the essence in order to complete the project on deadline without penalties. Hydrodemolition, the fastest and thus most cost effective method, was utilized to prepare the tunnel walls for a new, shotcrete surface. Because of hydrodemolition’s quick concrete removal and easy cleanup, contractors are able to work faster than conventional concrete removal methods. This allows them to work within the project’s limited hours of access to the job site and avoid heavy penalties for not opening the tunnel to traffic by the daily deadline. In addition, no

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