Exit 9 (Tarrytown – Sleepy Hollow – US Route 9) of the southbound New York State Thruway (I-87/I-287) will be closed between 10 p.m. and 5 a.m. during the overnights of Wednesday, Oct. 22 and Thursday, Oct. 23 to enable a widening of the southbound New York State Thruway (I-87/I-287) in Westchester County.
The widening of the southbound Thruway will require paving the shoulder in the vicinity of Exit 9 and is being done to facilitate a series of lane shifts occurring in the near future. Drivers bound for destinations in the Tarrytown vicinity are advised to use Exit 8A (I-87 – Elmsford – NY Route 119), continue north on northbound Route 119/White Plains Road, turn right onto to I–287 west towards I-87/Tappan Zee Bridge and continue to Exit 9 (Tarrytown – Sleepy Hollow – US Route 9). Drivers bound for destinations on or near White Plains Rd/Route 119 are advised to use Exit 8A to stay on Route 119. See graphic below.
One lane of the northbound Thruway in the vicinity of Exit 9 will be closed at 8 p.m., Friday, Oct. 24. At 9 p.m., a second lane will be closed and at 10 p.m., a third lane will be closed. All lanes will reopen at 8 a.m., Saturday, Oct. 25. These closures also are related to the above-mentioned paving operation.
Motorists are reminded that the northbound Thruway lanes recently were narrowed slightly at the Westchester approach to the Tappan Zee Bridge and the speed limit was reduced to 45 mph.
Construction will continue in the Hudson River as crews place the foundation for the new 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.
Tappan Zee Constructors, LLC, (TZC) is continuing construction of the new bridge’s landings. In Westchester, work includes drilling holes into the bedrock for the foundation of the landing. In Rockland, a similar operation is improving the strength of the soil by using aggregate piers, which are made by using a drill to mix soil and aggregate (i.e., crushed stone) to form a strong base for the new bridge’s abutment and foundation. The drilling process is less audible than impact pile driving and TZC has implemented noise-reducing measures to further minimize sound levels. The eight-week operation 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 | Oct. 20 | Southbound right lane near exit 10 | 10 a.m. to 3 p.m. |
| Monday | Oct. 20 | Southbound right lane across the Tappan Zee Bridge | 10 a.m. to 3 p.m. |
| Monday | Oct. 20 | Southbound right lane near exit 9 | 10 a.m. to 3 p.m. |
| Tuesday | Oct. 21 | Southbound right lane near exit 10 | 10 a.m. to 3 p.m. |
| Wednesday | Oct. 22 | Southbound right lane near exit 10 | 10 a.m. to 3 p.m. |
| Wednesday | Oct. 22 | Southbound right lane near exit 9 | 10 a.m. to 3 p.m. |
| Wednesday | Oct. 22 | Southbound right lane near exit 9 | 7 p.m. to 8 p.m. |
| Wednesday | Oct. 22 | Southbound two right lanes near exit 9 | 8 p.m. to 11:59 p.m. |
| Wednesday | Oct. 22 | I-87 Exit 9 exit ramp in Tarrytown closed | 10 p.m. to 11:59 p.m. |
| Thursday | Oct. 23 | Southbound two right lanes near exit 9 | Midnight to 6 a.m. |
| Thursday | Oct. 23 | I-87 Exit 9 exit ramp in Tarrytown closed | Midnight to 5 a.m. |
| Thursday | Oct. 23 | Northbound right lane near exit 9 | 10 a.m. to 3 p.m. |
| Thursday | Oct. 23 | Southbound right lane near exit 9 | 7 p.m. to 8 p.m. |
| Thursday | Oct. 23 | Southbound two right lanes near exit 9 | 8 p.m. to 11:59 p.m. |
| Thursday | Oct. 23 | I-87 Exit 9 exit ramp in Tarrytown closed | 10 p.m. to 11:59 p.m. |
| Thursday | Oct. 23 | Southbound 35 mph EZ-Pass lanes in Tarrytown closed | 10 p.m. to 11:59 p.m. |
| Friday | Oct. 24 | Southbound two right lanes near exit 9 | Midnight to 6 a.m. |
| Friday | Oct. 24 | I-87 Exit 9 exit ramp in Tarrytown closed | Midnight to 5 a.m. |
| Friday | Oct. 24 | Southbound 35 mph EZ-Pass lanes in Tarrytown closed | Midnight to 4 a.m. |
| Friday | Oct. 24 | Northbound right lane near exit 9 | 10 a.m. to 3 p.m. |
| Friday | Oct. 24 | Southbound left lane near exit 9 | 8 p.m. to 9 p.m. |
| Friday | Oct. 24 | Northbound two left lanes near exit 9 | 9 p.m. to 11 p.m. |
| Friday | Oct. 24 | Northbound three left lanes near exit 9 | 11 p.m. to 11:59 p.m. |
| Friday | Oct. 24 | Southbound 35 mph EZ-Pass lanes in Tarrytown closed | 10 p.m. to 11:59 p.m. |
| Saturday | Oct. 25 | Northbound three left lanes near exit 9 | Midnight to 8 a.m. |
| Saturday | Oct. 25 | Southbound 35 mph EZ-Pass lanes in Tarrytown closed | Midnight to 4 a.m. |
All lane closures are subject to change due to traffic, weather or emergency situations. Please visit https://www.thruway.ny.gov/travelers/map/index.html?layer=incidents for real time information regarding traffic conditions.
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
