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Alan J. Pierce EdD
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Introduction to Technology 2010
Textbook Contents

By: Pierce & Karwatka
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By Alan J. Pierce EdD
The New Tappan Zee Bridge
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     This new Tappan Zee Bridge is just beginning to rise from the water of the Hudson River. This column describes the engineering and construction technologies being used to build this new bridge. These bridges will withstand the forces of nature that are now slowly ripping apart the 60 year old Tappan Zee bridge that it will soon replace.
     To build a structurally sound bridge, this time, engineers needed to reach the bedrock which is 300 feet below the water and covered by hundreds of feet of silt. The new twin Bridges will have a  dampening system that will allow them to withstand the motion of an earthquake if, perhaps when, the Ramapo seismic zone decides to give them a major shake. The full story is fascinating.
The New Tappan Zee Bridge