Phase 3 will take place August 16-19 and August 23-26, when there will be a full suspension of service at 123 stations between Harlem and Downtown Brooklyn. During this suspension, vital work will be done along the entire 123 line.
Note: These weekend service changes will begin late Friday evening and end at 5:00 AM the following Monday.
Weekend Service Change Schedule for Phase 2: August 16-19
Local and express tracks out of service
1 operates between Van Cortlandt Park-242 St and 137 St
No 1 service between 137 St and South Ferry
2 operates between Wakefield-241 St and Flatbush Av via Lexington Avenue express
No 23 service at regular Manhattan stations and in Brooklyn at Clark St, Borough Hall, and Hoyt St
4 extended to New Lots Av all weekend to replace 3
5 operates between Eastchester-Dyre Av and E 180 St all weekend
S 42 St Shuttle operates between Grand Central and Times Square all weekend, including overnight
D operates on local track at night between 145 St and 59 St-Columbus Circle
M rerouted to 145 St via Central Park West local track on Saturday and Sunday, supplementing the C on the west side of Manhattan
Free shuttle buses
Bus #1 operates between 137 St 1 and 110 St C (M) making stops at 125 St 1, 116 St 1, 110 St 1, and 110 St C (M)
Bus #2 operates between 149 St-Grand Concourse 245 and 110 C (M) making stops at: 145 St 3, 135 St 23, 125 St 23, 116 St 23, 110 St 23, and 110 St C (M)
Bus #3 operates between Harlem 148 St 3 and 110 St C (M), making stops at 145 St 3, 135 St 23, 125 St 23, 116 St 23, 110 St 23, and 110 St C (M)
You can also use the M104, M5, and M7 as alternatives.
To find out more about all changes and phases, click here.