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

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Find here the details by period of disruptions related to the works in the north-east 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.

Closure for works and alternative routes: the recap by period

Work information from 1 to 12 July 2026

Reminder of closures

Map of cut lines

From 1 to 12 July 2026:

  • On weekdays, the RER B is interrupted between Châtelet – Les Halles and Aéroport Charles de Gaulle 2 – TGV / Mitry – Claye from 10:45 p.m.
  • On weekdays, the RER D is interrupted between Gare du Nord and Creil from 10:45 p.m.
  • Line 12 of the metro is completely interrupted from 10 p.m. on July 1, 5, 8 and 9.
  • The T1 tramway is interrupted between Asnières – Quatre Routes and Saint-Denis.

Work information from 13 to 24 July 2026

Reminder of closures

Map of cut lines

From 13 to 24 July:

  • On weekdays, the RER B is interrupted between Châtelet – Les Halles and Aéroport Charles de Gaulle 2 – TGV / Mitry – Claye from 10:45 p.m.
  • On weekdays, the RER D is interrupted between Gare du Nord and Creil from 10:45 p.m.
  • Line P is interrupted from Meaux to La Ferté-Milon.
  • Metro line 12 is interrupted between Concorde and Jules Joffrin from 16 to 26 July.
  • The T1 tramway was interrupted from Asnières – Quatre Routes to La Courneuve – 8 Mai 1945 and from Bobigny – Pablo Picasso to Noisy-le-Sec.

Work information from 25 to 30 July 2026

1. Reminder of closures

Map of cut lines

From 25 to 30 July 2026:

Section closures

  • The RER B is interrupted from Gare du Nord to Bourg-La-Reine.
  • The RER D is interrupted from Gare du Nord to Gare de Lyon.
  • Line K is discontinued from Gare du Nord to Mitry-Claye.
  • Line P is interrupted from Meaux to La Ferté-Milon.
  • Metro line 12 is interrupted between Concorde and Jules Joffrin from 16 to 26 July.
  • The T1 tramway was interrupted from Asnières – Quatre Routes to La Courneuve – 8 Mai 1945 and from Bobigny – Pablo Picasso to Noisy-le-Sec.

 

Offer Discounts

  • On the RER B, from Aéroport Charles de Gaulle 2 -TGV to Gare du Nord,
  • On the RER D, from Creil to Gare du Nord,
  • On the entire H line, except on the Pontoise – Gare du Nord branch.

2. Alternative routes to take during the period

Map of recommended alternative routes

The RER B and D terminate at Gare du Nord. A large crowd is to be expected in this station during rush hour, as well as on lines 4 and 5 of the metro.

To go to Paris from the stations of Mitry – Claye, Villeparisis – Mitry-le-Neuf, Vert Galant, Sevran – Livry and Aulnay-sous-Bois:

  • Take the RER B from Mitry - Claye to Paris
  • Or take the T4 tram from Aulnay-sous-Bois to Bondy, then the RER E to Paris.

Work information from 31 July to 9 August 2026

1. Reminder of closures

Map of lines that have been cut and where the supply is reduced

From 31 July to 9 August:

Section closures

  • The RER B is interrupted from Gare du Nord to La Croix de Berny and Robinson.
  • The RER D is interrupted from Gare du Nord to Gare de Lyon.
  • Line K is interrupted from Gare du Nord to Mitry - Claye.
  • Line P is interrupted from Meaux to La Ferté-Milon.
  • Metro 13 is interrupted from La Fourche to Saint-Denis - Université.
  • The T1 tramway was interrupted from Asnières – Quatre Routes to La Courneuve – 8 Mai 1945 and from Bobigny – Pablo Picasso to Noisy-le-Sec.

 

Offer Discounts

  • On the RER B, from Aéroport Charles de Gaulle 2 - TGV to Gare du Nord
  • On the RER D, from Creil to Gare du Nord
  • On the entire H line, except on the Pontoise – Gare du Nord branch.

2. Alternative routes to take during the period

Map of recommended alternative routes

The RER B and D terminate at Gare du Nord. A large crowd is to be expected in this station during rush hour, as well as on lines 4 and 5 of the metro.

 

To go to Paris from the stations of Mitry – Claye, Villeparisis – Mitry-le-Neuf, Vert Galant, Sevran – Livry and Aulnay-sous-Bois:

  • Take the RER B from Mitry - Claye to Paris
  • Or take the T4 tram from Aulnay-sous-Bois to Bondy, then the RER E to Paris.

Work information from 10 to 16 August 2026

1. Reminder of closures

Map of closed sections and offer discounts

From 10 to 16 August:

Section closures

  • The RER B is interrupted from Gare du Nord to La Croix de Berny and Robinson
  • The RER D is interrupted from Gare du Nord to Gare de Lyon
  • Line K is discontinued from Gare du Nord to Mitry-Claye.
  • Metro 13 is interrupted from La Fourche to Saint-Denis - University
  • The T1 tramway was interrupted from Asnières – Quatre Routes to La Courneuve – 8 Mai 1945 and from Bobigny – Pablo Picasso to Noisy-le-Sec.

 

Offer Discounts

  • On the RER B, from Charles de Gaulle Airport to Gare du Nord
  • On the RER D, from Creil to Gare du Nord
  • On the entire H line, except on the Pontoise – Gare du Nord branch.

2. Alternative routes to take during the period

Map of recommended alternative routes

The RER B and D terminate at Gare du Nord. A large crowd is to be expected in this station during rush hour, as well as on lines 4 and 5 of the metro.

 

To go to Paris from the stations of Mitry – Claye, Villeparisis – Mitry-le-Neuf, Vert Galant, Sevran – Livry and Aulnay-sous-Bois:

  • Take the RER B from Mitry-Claye to Paris
  • Or take the T4 tram from Aulnay-sous-Bois to Bondy, then the RER E to Paris.

Work information on 17 August 2026

Reminder of closures

August 17:

Section closures

  • On weekdays, the RER B is interrupted between Châtelet – Les Halles and Aéroport Charles de Gaulle 2 – TGV / Mitry – Claye from 10:45 p.m.
  • On weekdays, the RER D is interrupted between Gare du Nord and Creil from 10:45 p.m.
  • Metro 13 is interrupted from La Fourche to Saint-Denis - Université.
  • The T1 tramway was interrupted from Asnières – Quatre Routes to La Courneuve – 8 Mai 1945 and from Bobigny – Pablo Picasso to Noisy-le-Sec.

Work information from 18 to 30 August 2026

Reminder of closures

Map of closed sections

From 18 to 30 August:

Section closures

  • On weekdays, the RER B is interrupted between Châtelet – Les Halles and Aéroport Charles de Gaulle 2 – TGV / Mitry – Claye from 10:45 p.m.
  • On weekdays, the RER D is interrupted between Gare du Nord and Creil from 10:45 p.m.
  • Metro 12 is completely interrupted from 10 p.m. on August 19, 23, 26 and 30.
  • The T1 tramway was interrupted from Asnières – Quatre Routes to La Courneuve – 8 Mai 1945 and from Bobigny – Pablo Picasso to Noisy-le-Sec, and was completely interrupted on Sunday 16 and 30 August.