The new 6.4km underground section will extend Line 14 north from its existing terminal at St Lazare to Mairie de Saint-Ouen and a new depot.
There will be three intermediate stations at Pont-Cardinet, Port de Clichy and Saint-Ouen, all of which provide interchanges with other lines.
A further extension north to St-Denis Pleyel is planned to open in 2024 to interchange with the new lines 15 and 17 of the Grand Paris project. A 14km southern extension from Olympiades to Orly Airport will also be completed in the same year.
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