The revised Grand Paris Express timetable: lines 16 and 17 postponed to 2028-2029

You will still have to wait a little longer to take the future Grand Paris Express supermetro. If the objective of commissioning line 18 in December 2026 - the very first to see the light of day on a reduced portion - has been "confirmed", the Société des Grands Projets (formerly Société du Grand Paris) was finally forced to "review the timetable for the different phases of commissioning lines 15, 16 and 17", the group communicated this Thursday, September 24 following a supervisory board meeting.

An “in-depth analysis” supposed to assess the consequences of postponing the commissioning of line 15 South to the fall of 2027, announced last June, has indeed brought to light other difficulties. In particular that of guaranteeing “a necessary interval of 9 to 12 months between the commissioning of line 15 South and lines 16 and 17”. As a result, the SGP had to “review the timetable for the different phases of commissioning of these two lines as well as their geographical scope”, specifies the group.

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Two commissioning phases in 2028 and 2029

A first phase of commissioning is planned for the fall of 2028 on a perimeter going, for line 16, from Saint-Denis Pleyel to Parc du Blanc-Mesnil station, and, for line 17, from Saint-Denis Pleyel to Bourget Aéroport. Then a second phase of commissioning is planned for the fall of 2029 over a wider area as far as Noisy-Champs for line 16, and as far as the Parc des Expositions for line 17. The commissioning of the last section of line 17 to Mesnil-Amelot station remains scheduled for the end of 2030.

“It’s not a perfect system. There are hazards all the time, our job is to manage them,” Jean-François Monteils, the president of the SGP, warned last April in front of an audience of journalists, while the entry into circulation of the first section of line 18 is extremely anticipated. It will then be “the first metro line put into circulation in Île-de-France for 30 years”, boasts the SGP, but above all it will be the one which will allow all the others to see the light of day in their turn. Lines 15, 16 and 17 are in fact controlled by the same automated driving system.