Northbound traffic lanes of the New York State Thruway (I-87/I-287) in Westchester County will be shifted near the approach to the Tappan Zee Bridge to provide room for construction of the New NY Bridge landing. The nighttime operation is planned to begin on or about Tuesday, Sept. 30, weather permitting, and will be completed in the following two weeks.
The four relocated northbound lanes will be about six inches narrower than existing lanes, and will have a reduced speed limit of 45 mph.
Tappan Zee Constructors, LLC (TZC) will be conducting the nighttime and overnight road work as follows:
The Thruway northbound near Exit 9 in Tarrytown will be reduced to two lanes between 8 p.m. on Tuesday, Sept. 30 and 4:30 a.m. on Wednesday, Oct. 1. The Exit 9 on-ramp from Route 119 in Tarrytown also will be closed during this time. Northbound/westbound traffic will be detoured approximately 1.5 miles east on Route 119/White Plains Road to interchange 8A in Elmsford to enter I-87 /I-287 (See detour map below).
On Friday night, Oct. 3 into Saturday morning, Oct. 4, the southbound Thruway will be reduced to two lanes from 10 p.m. to midnight and one lane from midnight to 6 a.m., Saturday morning. The closure will extend the full length of the Tappan Zee Bridge to the Tarrytown toll plaza. Both 35-mph E-ZPass lanes also will be closed from 10 p.m., Friday to 6 a.m., Saturday.
The actual shifting of the northbound Thruway lanes will occur overnight on Saturday, Oct. 4 to Sunday, Oct. 5. Between 9 p.m. and midnight, northbound traffic will be reduced to two lanes between Interchange 9 and the Tappan Zee Bridge. Between midnight and 7 a.m., traffic on this stretch will be reduced to one lane.
Also during the overnight of Saturday, Oct. 4 to Sunday, Oct. 5, southbound traffic lanes will be reduced to two lanes from 10 p.m. to 8 a.m. across the Tappan Zee Bridge to the Tarrytown toll plaza.
The new traffic alignment will have all traffic lanes open as per usual configuration at 8 a.m., Sunday, Oct. 5.
Additional northbound lane closures in this area will be required nightly between 10 p.m. and 4:30 a.m., Monday, Oct. 6 through Wednesday, Oct. 8 to install temporary barriers and fencing along the north side of the roadway on the Tappan Zee Bridge.
Construction will continue in the Hudson River as crews place the foundation for the New NY Bridge. Work will include pile driving between 7 a.m. and 7 p.m., Monday through Friday and noon to 7 p.m., Saturday.
A second shift of workers also will continue pile welding, pile cleanout and concrete placement operations associated with permanent foundations.
TZC will continue construction on the new bridge’s Westchester landing, drilling holes into the bedrock for the foundation. The drilling process produces less noise than the impact pile driving alternative, and TZC has implemented noise-reducing measures to further minimize noise levels during the eight-week operation, which is anticipated to conclude in November.
Work will continue on the Rockland work trestle near the shoreline, including pile driving and cofferdam installation. The trestle will support equipment used for the construction of the westernmost section of the new bridge.
The U.S. Coast Guard has established a Safety Zone surrounding 16 construction barge mooring locations at the project site. No unauthorized vessels are allowed in the Safety Zone. In addition, marine law enforcement will be enforcing the rules of the expanded Regulated Navigation Areas (RNAs) east and west of the Safety Zone. The RNAs stretch 500 yards north and 500 yards south of the existing bridge. Boaters are urged to transit the main channel with no wake at a maximum speed of 5 knots, and to use extreme caution on the river at all times.
More New NY Bridge boater safety information, including the U.S. Coast Guard Notice to Mariners and construction site maps, can be found here at NewNYBridge.com. An interactive map showing vessel locations on the Hudson River is also available here for recreational and commercial boaters to get updated information on this very active construction zone. The GPS tracking map is for informational purposes and not intended for navigation.
Mariners also should be aware that TZC will continue work in the vicinity of the side channels under the existing bridge. Additional temporary navigational lights have been installed to further define the 600-foot navigation channel under the main span. Permanent elements of the new bridge are lit per U.S. Coast Guard requirements, as are all moorings, barges and other equipment.
| Monday | Sept. 29 | Southbound right lane across the Tappan | 10 a.m. to 3 p.m. |
| Tuesday | Sept. 30 | Southbound right lane across the Tappan Zee Bridge | 10 a.m. to 3 p.m. |
| Tuesday | Sept. 30 | Northbound two right lanes near exit 9 | 8 p.m. to 4:30 a.m. |
| Tuesday | Sept. 30 | Interchange 9 on ramp from Rt. 119 | 8 p.m. to 4:30 a.m. |
| Wednesday | Oct. 1 | Southbound right lane across the Tappan Zee Bridge | 10 a.m. to 3 p.m. |
| Thursday | Oct. 2 | Southbound right lane across the Tappan Zee Bridge | 10 a.m. to 3 p.m. |
| Thursday | Oct. 2 | Southbound right lane near exit 10 | 10 a.m. to 3 p.m. |
| Friday | Oct. 3 | Southbound Tarrytown toll plaza 35 mph E-ZPass lanes | 10 p.m. to 6 a.m. |
| Friday | Oct. 3 | Southbound two left lanes across the Tappan Zee Bridge to the Tarrytown toll plaza | 10 p.m. to midnight |
| Saturday | Oct. 4 | Southbound three left lanes across the Tappan Zee Bridge to the Tarrytown toll plaza | 12:00 a.m. to 6:00 a.m. |
| Saturday | Oct. 4 | Northbound left two lanes near exit 9 | 10 p.m. to 12 a.m. |
| Saturday | Oct. 4 | Southbound left lane near exit 9 | 10 p.m. to 8 a.m. |
| Sunday | Oct. 5 | Northbound left three lanes near exit 9 | 12:00 a.m. to 7 a.m. |
Ongoing Operations:
- Permanent pile installation, including pile driving between 7 a.m. and 7 p.m. on weekdays, and between noon and 7 p.m. on Saturdays
- Pile cap foundation construction
- Main span foundation construction
- Rockland landing construction
- Westchester landing construction
- River Road utility work
- Rockland trestle construction, including pile driving
- Survey inspections on existing bridge
- Support for river-based work from the Rockland trestle
