Tappan Zee Constructors (TZC) is scheduled to continue installing new precast concrete slabs near the bridge’s Westchester landing. The work will create a new base roadway for the twin-span crossing’s connection to the New York State Thruway (I-87/I-287) and require overnight lane closures on the northbound Thruway.
Work will also necessitate closing the northbound Thruway exit 9 (Tarrytown – Sleepy Hollow – US Route 9) on-ramp from Route 119 during the overnights of Friday, April 27, Monday, April 30, and Tuesday, May 1. Drivers will be detoured approximately one mile east on Route 119 to access the northbound Thruway (see map below). The exit 9 off-ramp will remain accessible from the northbound Thruway.
At least one lane will remain open at all times. Specific lane closure times are listed in the chart below.
| DATE: | CLOSURES BEGIN: | CLOSURES END: | LOCATION: |
| Fri., 4/27 | 8 p.m. – One right lane 10 p.m. – Two right lanes 11:59 p.m. – Three right lanes |
Sat., 4/28: 6 a.m. – Two lanes open 8 a.m. – Three lanes open 10 a.m. – All lanes open |
Northbound (I-87/I-287) from exit 8A to the bridge |
| Fri., 4/27 | 9 p.m. – Ramp closure | 6 a.m., Sat., 4/28 | Northbound Exit 9 on-ramp |
| Mon., 4/30 | 7 p.m. – One right lane 9 p.m. – Two right lanes 10:30 p.m. – Three right lanes |
Tue., 5/1: 6 a.m. – Two lanes open 7 a.m. – Three lanes open 8 a.m. – All lanes open |
Northbound from exit 8A to the bridge |
| Mon., 4/30 | 9 p.m. – Ramp closure | 6 a.m., Tue., 5/1 | Northbound Exit 9 on-ramp |
| Tue., 5/1 | 7 p.m. – One right lane 9 p.m. – Two right lanes 10:30 p.m. – Three right lanes |
Wed., 5/2: 6 a.m. – Two lanes open 7 a.m. – Three lanes open 8 a.m. – All lanes open |
Northbound from exit 8A to the bridge |
| Tue., 5/1 | 9 p.m. – Ramp closure | 6 a.m., Wed., 5/2 | Northbound Exit 9 on-ramp |
| Wed., 5/2 | 7 p.m. – One left lane 9 p.m. – Two left lanes 11 p.m. – Three left lanes |
Thur., 5/3: 6 a.m. – Two lanes open 7 a.m. – Three lanes open 8 a.m. – All lanes open |
Northbound from exit 8A to the bridge |
| Thur., 5/3 | 8 p.m. – One left lane 9 p.m. – Two left lanes 11:30 p.m. – Three left lanes |
Fri., 5/4: 6 a.m. – Two lanes open 7 a.m. – Three lanes open 8 a.m. – All lanes open |
Northbound from exit 8A to the bridge |
TZC is also scheduled to pour concrete for the eastbound span’s Westchester landing this week, weather permitting. The work will not require the closure of any Thruway traffic lanes.
Truss Dismantling
TZC is scheduled to remove large steel truss sections of the old bridge this week and next week with the assistance of the project’s largest crane, dubbed I Lift NY. The truss sections, weighing up to 1,300 tons, will be placed on barges and transported to ancillary project facilities.
Maintenance and State Police Facilities
TZC is planning to pour concrete for the new State Police facility in Tarrytown in the coming days, weather permitting. TZC will also continue to install exterior wall panels and glass windows at the Thruway Authority’s new maintenance building in Tarrytown.
Additional work includes:
- Abutment backfilling near Rockland landing
- Deck panel installation
- Internal tower work
- Electrical equipment installation and testing
- Dismantling of the old bridge’s foundations, piers and circular caissons
Boater Safety
Periodic closures of the main navigation channel are anticipated to occur during construction and demolition periods. Cranes, barges and other equipment will occupy parts of the channel during this time. Boaters are strongly encouraged to avoid the project site during the closures and to avoid the Regulated Navigation Areas, located east and west of the main channel.
Times and dates of the closures are subject to change and will appear in the U.S. Coast Guard’s weekly Notice to Mariners; on the project’s Twitter feed (@NewNYBridge); and broadcast on Marine Radio Channel 22A. Tappan Zee Constructors can be contacted via Marine Radio Channel 16 for assistance.
Rockland and Westchester marine units continue to patrol the project site.
More boater safety information, including the U.S. Coast Guard Notice to Mariners, a construction site map and GPS-tracked construction vessel locations, can be found at NewNYBridge.com/Boater.
The New York State Thruway Authority provides this information as a public service. Any reliance you place on such information is therefore strictly at your own risk. Nothing in these guidelines shall supersede the actual construction conditions, and regulations set forth by the U.S. Coast Guard.
All lane closures are subject to change due to traffic, weather or emergency situations. Please visit https://www.thruway.ny.gov/travelers/map/ for real-time information regarding traffic conditions.
