The International Information Center for Structural Engineers

Thursday, 09 October 2014 10:29

Super Crane Arrives in New York

The “I Lift NY” floating super crane arrived at the Tappan Zee Bridge this week and yesterday had to do the limbo to travel to the other side of the bridge. The crane made its way up the Hudson River from Jersey City on Monday after completing its journey from San Francisco through the Panama Canal earlier this month. Around 5 pm yesterday, a tugboat helped guide the crane north underneath the existing bridge and to the location where the new bridge is currently under construction. Workers on site prepared for the crane's arrival by removing the existing bridge’s navigation light from under the bridge to give the crane a little more clearance. The barge carrying the crane was also filled with water to make it ride lower in the water. The crane was able to squeeze under the existing bridge without any problems and will now be anchored on the other side for the next couple of years. It uses special steel anchors, called spuds that are planted in the river bottom to keep from moving.

Additional Info

  • Date occured Thursday, 09 October 2014

Workers began drilling piles for the Tappan Zee Bridge in March. Since then, equipment has slowly accumulated on the Hudson River in New York to help build the bridge. Perhaps the most impressive piece of equipment arrived last week though when a barge-mounted concrete production factory arrived on site. The barge is one of a pair that will make 300,000 cubic yards of concrete for the new bridge span. The two barges are expected to reduce costs throughout the length of the project and also will likely make the project run smoother as the concrete will not need to be transported to the site. Workers will not have to worry about the concrete getting delayed due to traffic or road hazards. Had the decision been made to make the bridge’s concrete at a regular production factory, the Tappan Zee bridge project would have added 30,000 trucks to the road to transport the concrete throughout the duration of the project. The 60 foot by 200 foot barge is capable of producing 125 cubic yards of concrete per hour and can test the concrete in a laboratory located on the barge.

Additional Info

  • Date occured Wednesday, 23 July 2014
Thursday, 27 March 2014 10:41

Tappan Zee Bridge Funding Questions Remain

While the first three piles for the Tappan Zee Bridge in New York have been completed, there are still many questions remaining about how the bridge will be financed. The original three-mile long Tappan Zee Bridge was completed in 1955, and it spans the Hudson River at its widest point connecting Rockland County and Westchester County. Construction on the new bridge began last year after decades of debate over whether to repair the existing bridge or build a new one. Currently, only $1.6 billion, of the $3.9 billion it will cost to build the new bridge, has been committed to the project. New York Lawmakers and officials at the New York State Thruway Authority, the agency overseeing construction of the bridge, are trying to determine who will pay for the $2.3 billion gap in funding.

Additional Info

  • Date occured Thursday, 27 March 2014

The icy temperatures sweeping across the United States have caused foundation work on the new Tappan Zee Bridge to come to a halt.  The frozen areas of the Hudson River in New York are preventing tug boats from being able to move around safely.  Project leaders are not sure how long the delays will last, but the forecast for the next week looks promising with every day’s high temperature well above freezing.  As soon as the large chunks of ice floating in the Hudson River melt, workers can get back to installing piles to support the bridge.  The project schedule includes a two-month period each year where crews will not be able to work on the Tappan Zee Bridge due to weather restrictions.  As a result, this delay is not expected to affect completing the bridge by 2018, and construction is continuing to move forward on land.

Additional Info

  • Date occured Thursday, 09 January 2014