Bridge Work This Week: the Foundation in South Nyack and Work on River Road

Expect traffic lane shifts and possibly lane closures on River Road the week of April 6 as modifications are made to the work zone.

Sheet pile installation will also continue this week. 

River Road in South Nyack

Traffic lanes will see a slight shift as modifications to the work zone take place along River Road in the project area. This may involve the reduction of traffic to one lane at times. TZC Flag persons will direct traffic as needed and additional signage and other safety measures will be in place.

Foundation Work on the New Bridge

Marine crews will continue working on the foundations for the new bridge next week by placing reinforcing steel and concrete in the piles, main span pile caps and approach span pile caps. The high-strength concrete is made on site by the project’s two floating batch plants that are now back in operation. Teams will also erect formwork for the cast-in-place pier columns, which will eventually support the bridge’s road deck. With only a small percentage of piles left to install, pile driving operations will continue next week. The periodic pile driving is restricted to 7 a.m. to 7 p.m., Monday through Friday and noon to 7 p.m., Saturday.

Crews also will continue working on the bridge’s landings at the Rockland and Westchester shorelines. The abutments, comprised of steel and concrete, will serve as strong bases where the new crossing meets the landside roadway. The foundation work in South Nyack utilizes sheet piles to support the soil during construction of the foundation walls. Sheet pile installation will continue during daytime hours and noise attenuation procedures are in place to reduce impacts on the local residents. Environmental engineers will also be on site to monitor the noise levels.

TZC will continue limited concrete placement for foundations near the South Nyack shoreline. The concrete for this work is being acquired from local concrete suppliers and is delivered by truck to the Rockland trestle located off the Thruway’s southbound access ramp. Trucks exit the trestle to the Thruway via the northbound access ramp. The access ramps are used only by construction vehicles, providing a safe route directly to the work site and reducing traffic impacts on local roads.

Additional work includes:

• • Pile cap foundation construction
  • Main span foundation construction
  • Concrete placement for foundations
  • Landing abutment concrete work
  • River Road utility work
  • Support for river-based work from the Rockland trestle
  • Survey inspections on the existing bridge