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Test-Pile Work Under Way On New Tappan Zee Bridge

TARRYTOWN, N.Y. – The first test piles for the new Tappan Zee Bridge will be installed this week, the New York State Thruway Authority announced.

New York State officials said test piling operations begin this week.

New York State officials said test piling operations begin this week.

Test-pile operations will be conducted by Tappan Zee Constructors, LLC over the next three months at the proposed locations for pile foundations, the announcement said.  The test-pile program will verify subsurface conditions in preparation for the construction of the bridge’s permanent foundation, according to the state.

Crews will conduct boring operations at night along I-87 and I-287 in Westchester and Rockland counties.  Boring operations will begin at exit 10 in Rockland and move west into Westchester.

Westchester: On Friday, nighttime boring operations to investigate subsurface soil conditions will be conducted in the southbound shoulder of I-87/I-287 and will require a temporary right lane closure between the existing bridge and exit 9 from 9 p.m. to 6 a.m.

Rockland side: Until Thursday, nighttime boring operations to investigate subsurface soil conditions will be conducted in the southbound shoulder of I-87/I-287 and will require a temporary right lane closure between exit 10 and the existing bridge from 9 p.m. to 6 a.m. 

Other ongoing operations include:

  • Temporary Westchester trestle construction including pile driving on weekdays from 7 a.m. to 7 p.m.
  • Survey inspections on existing bridge
  • Rockland environmental monitor installations continue
  • Geotechnical land borings
  • Mobilization at the exit 10 staging area
  • Support for river-based work from the Rockland shoreline

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