Parts of the TTC subway will close for at least a weekend, starting in March and occurring every single month until the end of the year.

The scheduled closures are to keep the subway in state of good repair, the Toronto Transit Commission said on its website.

The closures will affect Line 1 (Yonge-University-Spadina), Line 2 (Bloor-Danforth), and Line 3 (Scarborough RT).

The work is being done in one solid chunk so as to not to disturb the work week. One weekend of work during a subway closure equals about five weeks of nightly work, according to the TTC.

While the TTC said the schedule and details of the closures are subject to change, this is where things stood on Thursday:

March

Line 1: St. George to Lawrence West closure on March 5 and 6, and again on March 19 and 20.

April

Line 2: Kennedy to Victoria Park closure on April 2, and again on April 23 and 24

Line 2: Pape to St. George opening late on April 3, and early closure on April 17.

Line 2: St. George to Jane closure on April 9 and 10

Line 1: St. George to Lawrence West closure on April 16 and 17

Line 3: McCowan to Kennedy closure on April 30 and May 1

May

Line 2: Pape to St. George opening late on May 1, and again on May 15

Line 2: Ossington to Jane closure on May 7 and 8

Line 1: St Clair West to Downsview closure on May 28 and 29

June

Line 3: McCowan to Kennedy closure on June 4 and 5, and again on June 25 and 26

Line 2: Pape to St. George early closure on June 5

Line 2: Pape to St. George closure on June 12

Line 1: St Clair West to Downsview closure on June 18 and 19

Line 2: Pape to St. George opening late on June 26

July

Line 2: Woodbine to Pape closure on July 9

Line 2: Pape to St. George opening late on July 17

Line 1: Union to Osgoode closure on July 23 and 24

August

Line 1: Lawrence to Bloor-Yonge closure on Aug. 6 and 7, and again on Aug. 27 and 28

Line 2: Pape to St. George opening late on Aug. 14

Line 1: St George to Union closure on Aug. 20

September

Line 1: Lawrence to Bloor-Yonge closure on Sept. 3 and 4, and again on Sept. 10 and 11

Line 1: St Clair West to Downsview closure on Sept. 17 and 18

Line 1: Wilson to Downsview closure on Sept. 24 and 25

October

Line 1: Wilson to Downsview closure on Oct. 8, 9 and 10

Line 2: Pape to St, George opening late on Oct. 9 and 10

Line 1: St. George to Downsview closure on Oct. 15 and 16, and again on Oct. 29 and 30

Line 4: Sheppard-Yonge to Bayview closure on Oct. 22 and 23

Line 3: McCowan to Kennedy closure on Oct. 22 and 23

November

Line 1: St. Clair to Union closure on Nov. 5 and 6

Line 1: Lawrence to Bloor-Yonge closure on Nov. 12 and 13

Line 3: McCowan to Kennedy closure on Nov.19 and 20

Line 1: Finch to York Mills closure on Nov. 26 and 27

December

Line 1: Wilson to Downsview closure on Dec. 3 and 4