Weekend work affecting nine subway lines

The end of this week slipped away from me, and I didn’t have a chance to finish a few planned posts. Next week, we’ll tackle the line review for the A/C trains and some issues with the R in Brooklyn. This Sunday is your second-to-last chance to catch the Nostalgia Train running along 6th Ave. before next winter. Don’t miss out.

Meanwhile, service advisories from the MTA follow. It’s another light week as the holidays draw nearer.

From 12:01 a.m. to 6:00 a.m. Saturday, December 19, from 12:01 a.m. to 8:00 a.m. Sunday, December 20, and from 12:01 a.m. to 5:00 a.m. Monday, December 21, 4 service operates in two sections:

• Between Woodlawn and 125 St.
• Between 125 St and New Lots Av.
• Transfer at 125 St to continue your trip.

From 11:45 p.m. Friday, December 18 to 6:00 a.m. Saturday, December 19, and from 11:45 p.m. Saturday, December 19 to 8:00 a.m. Sunday, December 20, and from 11:45 p.m. Sunday, December 20, to 5:00 a.m. Monday, December 21, Crown Hts-Utica Av bound 4 trains run express from 125 St to Grand Central-42 St.

From 12:01 a.m. Saturday, December 19 to Monday, December 21, Woodlawn-bound 4 trains run local from Grand Central-42 St to 125 St.

From 11:45 p.m. Friday, December 18 to 6:00 a.m. Saturday, December 19, and from 11:45 p.m. Saturday, December 19 to 8:00 a.m. Sunday, December 20, and from 11:45 p.m. Sunday, December 20, to 5:00 a.m. Monday, December 21, Woodlawn-bound 4 trains skip 138 St-Grand Concourse.

From 11:45 p.m. Friday, December 18 to 6:00 a.m. Saturday, December 19, and from 11:45 p.m. Saturday, December 19 to 8:00 a.m. Sunday, December 20, and from 11:45 p.m. Sunday, December 20, to 5:00 a.m. Monday, December 21, Brooklyn Bridge-City Hall bound 6 trains run express from 125 St to Grand Central-42 St.

From 11:45 p.m. Friday, December 18 to 6:30 a.m. Saturday, December 19, and from 11:45 p.m. Saturday, December 19 to 8:00 a.m. Sunday, December 20, and from 11:45 p.m. Sunday, December 20, to 5:00 a.m. Monday, December 21, Inwood-207 St bound A trains run express from Canal St to 145 St.

From 6:30 a.m. to 11:00 p.m. Saturday, December 19 and Sunday, December 20, 168 St-bound C trains run express from Canal St to 145 St.

From 11:45 p.m. Friday, December 18 to 5:00 a.m. Monday, December 21, Norwood-205 St bound D trains are rerouted via the C line from W4 St-Wash Sq to 145 St.

From 11:45 p.m. Friday, December 18 to 5:00 a.m. Monday, December 21, F trains are suspended in both directions between Coney Island-Stillwell Av and Kings Hwy.

From 9:00 a.m. to 7:00 p.m. Saturday, December 19 and from 11:00 a.m. to 6:00 p.m. Sunday, December 21, additional F service is provided between Jamaica-179 St and 2 Av.

From 11:45 p.m. Friday, December 18 to 5:00 a.m. Monday, December 21, Jamaica-179 St bound F trains skip 169 St.

From 11:30 p.m. Friday, December 18 to 5:00 a.m. Monday, December 21, L trains are suspended in both directions between Canarsie-Rockaway Pkwy and Myrtle-Wyckoff Avs. Take free express and local shuttle buses and AC or J trains.

• Free local shuttle buses provide alternate service between Rockaway Pkwy and Myrtle-Wyckoff Avs, stopping at East 105 St, New Lots Av, Livonia Av, Sutter Av, Atlantic Av, Broadway Junction, Bushwick Av, Wilson Av, and Halsey St.
• Free express shuttle buses serve Rockaway Pkwy, Broadway Junction, and Myrtle-Wyckoff Avs only.
• Transfer between free shuttle buses and L trains at Myrtle-Wyckoff Avs. To/from Manhattan, consider the AC or J via transfers between trains and shuttle buses at Broadway Junction.

From 11:45 p.m. Friday, December 18 to 6:00 a.m. Saturday, December 19, and from 11:45 p.m. Saturday, December 19 to 6:00 a.m. Sunday, December 20, and from 11:45 p.m. Sunday, December 20, to 5:00 a.m. Monday, December 21, Astoria-bound N trains are rerouted via the Q line from DeKalb Av to Canal St.

From 6:00 a.m. to 11:00 p.m. Saturday and Sunday, December 19 and December 20, 71 Av-bound R trains are rerouted via the Q line from DeKalb Av to Canal St.