Works in the central sector of Île-de-France: disruptions and alternative routes

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On this page, you will find the details by period of disruptions related to the works in the central sector, as well as the alternative routes to be favoured to get around.

Île-de-France has been divided into 5 sectors (South, East, Centre, North-East and North-West) to better understand the impact of disruptions on the public transport network on a regional scale. During the different periods, alternative routes may save time compared to the usual alternative route.

To simplify your travels

One month before the start of the work, the Île-de-France Mobilités route planner (available on our website and smartphone application) will take into account closures and disruptions and will allow you to anticipate your journeys.

Work information from 6 to 14 July 2026

Reminder of closures

From 6 to 14 July:

  • Line 4 is interrupted from Les Halles to Montparnasse-Bienvenüe. All stations on line 4 between these stations are closed.
  • Line 13 is interrupted from Malakoff - Etienne Dolet to Châtillon - Montrouge.
  • The Nation station (RER A) is closed: trains do not stop there.

Work information on 15 July 2026

Reminder of closures

July 15:

  • The RER C is interrupted from Gare d'Austerlitz to Versailles Château Rive Gauche and Saint-Quentin-en-Yvelines and from Gare d'Austerlitz to Pontoise. All RER C stations between these stations are closed.
  • Line 4 is interrupted from Les Halles to Montparnasse-Bienvenüe. All stations on line 4 between these stations are closed.
  • Line 13 is interrupted from Malakoff - Etienne Dolet to Châtillon - Montrouge.
  • The Nation station (RER A) is closed: trains do not stop there.

Work information from 16 to 24 July 2026

Reminder of closures

From 16 to 24 July:

  • The RER C is interrupted from Gare d'Austerlitz to Versailles Château Rive Gauche and Saint-Quentin-en-Yvelines and from Gare d'Austerlitz to Pontoise. All RER C stations between these stations are closed.
  • Line 4 is interrupted from Les Halles to Montparnasse-Bienvenüe. All stations on line 4 between these stations are closed.
  • Line 12 is interrupted from Jules Joffrin to Concorde. All stations on line 12 between these stations are closed.
  • Line 13 is interrupted from Malakoff - Etienne Dolet to Châtillon - Montrouge.
  • The Nation station (RER A) is closed: trains do not stop there.
  • République station (line 8) is closed: trains do not stop there.

Work information from 25 to 26 July 2026

1. Reminder of closures

From 25 to 26 July:

  • The RER B is interrupted from Gare du Nord to Bourg-la-Reine. All RER B stations between these stations are closed. If necessary, they remain served by the other lines.
  • The RER C is interrupted from Gare d'Austerlitz to Versailles Château Rive Gauche and Saint-Quentin-en-Yvelines and from Gare d'Austerlitz to Pontoise. All RER C stations between these stations are closed.
  • The RER D is interrupted from Gare du Nord to Gare de Lyon. All RER D stations between these stations are closed.
  • Line 12 is interrupted from Jules Joffrin to Concorde. All stations on line 12 between these stations are closed.
  • Line 13 is interrupted from Malakoff - Etienne Dolet to Châtillon - Montrouge.
  • The Nation station (RER A) is closed: trains do not stop there.
  • République station (line 8) is closed: trains do not stop there.

2. Alternative routes to take during the period

Be careful, there is a risk of heavy traffic on metro lines 4 and 5

From 25 to 26 July:

Between Gare du Nord and Châtelet - Les Halles:

  • Take metro line 7 from Poissonnière and Châtelet
  • or the RER E at Magenta to Haussmann - Saint-Lazare, then metro 14 to Châtelet
  • or bus 38 from Gare du Nord to Châtelet

Between Gare du Nord and Gare de Lyon:

  • Take the RER E at Magenta to Haussmann - Saint-Lazare, then the metro 14 to Gare de Lyon
  • or bus 91 from Gare du Nord to Gare de Lyon

Between Châtelet and Gare de Lyon:

  • Take the metro 14

Work information from 27 to 30 July 2026

1. Reminder of closures

From 27 to 30 July:

  • The RER B is interrupted from Gare du Nord to Bourg-la-Reine. All RER B stations between these stations are closed. If necessary, they remain served by the other lines.
  • The RER C is interrupted from Gare d'Austerlitz to Versailles Château Rive Gauche and Saint-Quentin-en-Yvelines and from Gare d'Austerlitz to Pontoise. All RER C stations between these stations are closed.
  • The RER D is interrupted from Gare du Nord to Gare de Lyon. All RER D stations between these stations are closed.
  • The Nation station (RER A) is closed: trains do not stop there.
  • République station (line 8) is closed: trains do not stop there.

2. Alternative routes to take during the period

Be careful, there is a risk of heavy traffic on metro lines 4 and 5

From 27 to 30 July:

Between Gare du Nord and Châtelet - Les Halles:

  • Take metro line 7 from Poissonnière and Châtelet
  • or the RER E at Magenta to Haussmann - Saint-Lazare, then metro 14 to Châtelet
  • or bus 38 from Gare du Nord to Châtelet

Between Gare du Nord and Gare de Lyon:

  • Take the RER E at Magenta to Haussmann - Saint-Lazare, then the metro 14 to Gare de Lyon
  • or bus 91 from Gare du Nord to Gare de Lyon

Between Châtelet and Gare de Lyon:

  • Take the metro 14

Work information from 31 July to 16 August 2026

1. Reminder of closures

From 31 July to 16 August:

  • The RER A is interrupted from Vincennes to Noisy-le-Grand Mont d'Est. All RER A stations between these stations are closed.
  • The RER B is interrupted from Gare du Nord to Bourg-la-Reine. All RER B stations between these stations are closed.
  • The RER C is interrupted from Gare d'Austerlitz to Versailles Château Rive Gauche and Saint-Quentin-en-Yvelines and from Gare d'Austerlitz to Pontoise. All RER C stations between these stations are closed.
  • The RER D is interrupted from Gare du Nord to Gare de Lyon. All RER D stations between these stations are closed.
  • Line 13 is closed from La Fourche to Saint-Denis Université. All stations on line 13 between these stations are closed.
  • The Nation station (RER A) is closed: trains do not stop there.
  • République station (line 8) is closed: trains do not stop there.

2. Alternative routes to take during the period

Be careful, there is a risk of heavy traffic on metro lines 4 and 5

From 31 July to 16 August:

Between Gare du Nord and Châtelet - Les Halles:

  • Take metro line 7 from Poissonnière and Châtelet
  • or the RER E at Magenta to Haussmann - Saint-Lazare, then metro 14 to Châtelet
  • or bus 38 from Gare du Nord to Châtelet

Between Gare du Nord and Gare de Lyon:

  • Take the RER E at Magenta to Haussmann - Saint-Lazare, then the metro 14 to Gare de Lyon
  • or bus 91 from Gare du Nord to Gare de Lyon

Between Châtelet and Gare de Lyon:

  • Take the metro 14

Work information on 17 August 2026

Reminder of closures

August 17:

  • The RER A is interrupted from Vincennes to Noisy-le-Grand Mont d'Est. All RER A stations between these stations are closed.
  • The RER C is interrupted from Gare d'Austerlitz to Versailles Château Rive Gauche and Saint-Quentin-en-Yvelines and from Gare d'Austerlitz to Pontoise. All RER C stations between these stations are closed.
  • Line 13 is closed from La Fourche to Saint-Denis Université. All stations on line 13 between these stations are closed.
  • The Nation station (RER A) is closed: trains do not stop there.
  • République station (line 8) is closed: trains do not stop there.

Work information from 18 to 19 August 2026

Reminder of closures

From 18 to 19 August:

  • The RER A is interrupted from Vincennes to Noisy-le-Grand Mont d'Est. All RER A stations between these stations are closed.
  • The RER C is interrupted from Gare d'Austerlitz to Versailles Château Rive Gauche and Saint-Quentin-en-Yvelines and from Gare d'Austerlitz to Pontoise. All RER C stations between these stations are closed.
  • The Nation station (RER A) is closed: trains do not stop there.
  • République station (line 8) is closed: trains do not stop there.

Work information from 20 to 22 August 2026

1. Reminder of closures

From 20 to 22 August:

  • The RER A is interrupted from Vincennes to Noisy-le-Grand Mont d'Est. All RER A stations between these stations are closed.
  • The RER C is interrupted from Gare d'Austerlitz to Versailles Château Rive Gauche and Saint-Quentin-en-Yvelines and from Gare d'Austerlitz to Pontoise. All RER C stations between these stations are closed.
  • Line 8 is closed between Concorde and Balard. All stations on line 8 between these stations are closed.
  • The Nation station (RER A) is closed: trains do not stop there.
  • République station (line 8) is closed: trains do not stop there.

Work information from 23 to 27 August 2026

1. Reminder of closures

From 23 to 27 August:

  • The RER A is interrupted from Vincennes to Noisy-le-Grand Mont d'Est. All RER A stations between these stations are closed.
  • Line 8 is closed between Concorde and Balard. All stations on line 8 between these stations are closed.
  • The Nation station (RER A) is closed: trains do not stop there.
  • République station (line 8) is closed: trains do not stop there.

Work information on 28 August 2026

Reminder of closures

August 28:

  • The Nation station (RER A) is closed: trains do not stop there.
  • République station (line 8) is closed: trains do not stop there.

Work information from 29 to 30 August 2026

1. Reminder of closures

From 29 to 30 August:

  • The RER B is interrupted from Gare du Nord to Denfert-Rochereau. All RER B stations between these stations are closed.
  • The Nation station (RER A) is closed: trains do not stop there.
  • République station (line 8) is closed: trains do not stop there.