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Paris Métro Line 9 is one of the sixteen lines of theParis Métro network currently open. It linksPont de Sèvres inBoulogne-Billancourt, the third most populated city inIle-de-France, toMairie de Montreuil, the second most populated city ofSeine-Saint-Denis in the east, along a parabolic - shaped route through the center of the French capital. With 133,24 million passengers in 2024, it is the third busiest line on the historic network, behind lines 1 and 4, as well as one of the longest. First of the historic lines not part ofFulgence Bienvenüe's initial project, It is also the very first line of the Paris Métro to cross the borders of Paris and service its suburbs, with the line segment in Boulogne opening in 1934 following three years later by the segment inMontreuil. Since then, Line 9 didn't evolve much in terms of layout.
The first line coined in the complementary project, Line 9 was originally envisioned as a branch ofLine 2 Sud (now known asLine 6) meant to cover the south of the wealthy16th arrondissement between Porte de Saint-Cloud and Trocadero. However, it was concluded by the CMP to instead combine this segment with a proposed segment that was to be built towards Opera, and thus Line 9 is created. The first section between Trocadero and Exelmans opened on 8 November 1922.
Construction of the original sections (as well as the extension towards République) proved to be difficult due to public opposition in the various arrondissements as well as unstable soil above the tunnels. Public support for the line's construction was greatly difficult due in part to proposed sections that various entities saw as impossible to build and operate under government regulations at the time. In addition, unstable soil led to the collapse of several sections of tunnel being constructed. The double-decker tunnel from Richelieu - Drouot to République (which carries Line 9 on the lower level, andLine 8 on the upper level) proved especially problematic due to unstable ground at Grands Boulevards. As a result, this particular section had to be reinforced by central piers.
The first extension into the suburbs, towards Pont de Sèvres, opened on 3 February 1934. On 14 October 1937, the eastern extension towards Mairie de Montreuil opened. Since then, few changes to the line's infrastructure have been made.(fromfr:Ligne 9 du métro de Paris)
Line 9 is operated with theMF 01 stock in five-car sets. Before that, line 9 was the last line equipped of the pre-warSprague-Thomson-trains, which were removed from service on 16 April 1983. On 9 February 2011, theSTIF announced plans to acquire 66 newMf 01-trainsets. The €330 million order began deliveries during June 2013 and will continue through 2016 to replace the current stock on line 9. The Last MF67 on Line 9 was withdrawn from service on 28 November 2016.[2] On 21 October 2013, the first MF 01 railcar (#096) entered revenue service along Line 9, after spending the course of June through September running along Line 5. The Auteuil workshops, which Line 10 used to share with Line 9, was not equipped to handle maintenance operations for the MF 01 rolling stock, and thus heavy maintenance work was done at the Bobigny workshops along Line 5.
| Renaming date | Former name | New Name | Notes |
|---|---|---|---|
| 6 October 1942 | Rond-Point des Champs-Élysées | Marbeuf – Rond-Point des Champs-Élysées | |
| 30 october 1946 | Marbeuf – Rond-Point des Champs-Élysées | Franklin D. Roosevelt | |
| 1989 | Chaussée d'Antin | Chaussée d'Antin – La Fayette | |
| September 1998 | Rue Montmartre Rue des Boulets - Rue de MontreuilBoulets - Montreuil | Grands Boulevards Boulets - MontreuilRue des Boulets | Due to multiple tourists confusing the station with the Montmartre district In order to avoid confusion with the city of Montreuil itself. |
A two-station extension toMontreuil - Hôpital is planned for the future. The new stations will connect line 9 with tramway 1 and metro line 11.[citation needed]
Metro line 9 passes near several places of interest :
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