A number of lines and stations on the Paris metro are or will soon be under modernization, requiring full or partial closure.
Line 3 will close between stations Gambetta and Gallieni, from April 8 to May 12
Line 3bis close most Sunday atfer 10pm and all day May 16 to May 21
Line 4 will close from April 20 to May 1 between Barbes and Chatelet
Line 8 will close between Concorde and Reuilly from Aug 18 to 31. Station 8 Republique will remain closed for several months after that.
Line 12 will be closed from Jules Joffrin to Concorde July 16 to 26.
Nation on line A will be closed June 29 and 30. No trains from Nanterre to Cergy on June weekends.
No CDG airport B train May 8 to 10 and May 23 to 25. RER B will also close this summer : June 5-7 and July 25-Aug 16 south of Gare du Nord.
No trains to TROYES on weekends from May and all summer.