Works on the lines of RER
Also worth reading

New Paris bus network
Île-de-France Mobilités (Paris regional transport authority), RATP and the City of Paris are pleased to announce that the new Paris bus ne...

Metro line 11: platform closure at Châtelet station
Due to upgrade works, platforms at Châtelet station will not be served from Monday 18 March to Monday 16 December 2019 inclusive.
...

Metro line 4: closures in the first half of 2019
The line is closed at night from Monday to Thursday until 25 April and on Sunday mornings until 28 July.
...