page_title: Paris Métro Line 10
section_title: Service to Auteuil
hierarchical_section_title: Paris Métro Line 10 / History / Service to Auteuil
caption_attribution_description: Français&#160;: Ligne 8 du métro de Paris (actuelle ligne 10), France. Profil en long et en plan de la traversée sous-fluviale à Auteuil (pont Mirabeau).
context_page_description: Paris Métro Line 10 is one of 16 metro lines in Paris, France. The line links the Boulogne – Pont de Saint Cloud metro station in Boulogne in the west with the Gare d'Austerlitz, travelling under the neighborhoods situated on the Rive Gauche in the southern half of Paris and the commune of Boulogne-Billancourt. Its two termini are Gare d'Austerlitz and Boulogne – Pont de Saint-Cloud.
  The line is entirely underground and stretches 11.7 kilometres across 23 stations. It has the least traffic of any of the 14 main metro lines.
  Initially, the MA 51 model trains, which had previously been used on line 13 until it joined line 14, circulated the tracks of line 10. These trains were first constructed with three cars on four chassis per train, and two trains permanently connected to make six cars per train, having an equivalent capacity to five cars on the classic metro trains. Because of the ineffectiveness of the MA 51 model, it was eventually completely replaced by the MF 67 model.
  The line's history is closely tied to that of lines 7, 8, and 13.
context_section_description: Métro line 10 resulted from the connection of two sections, east and west, which created a set of distinct lines.  The west section, from La Motte-Picquet to Grenelle à Porte d'Auteuil was initially a part of line 8.
  Line 8 was the last line created by the agreement of 30 March 1898, and consists of a route between Opéra and Porte d'Auteuil via Grenelle.  In March 1910, the line was branched off and opened with line 7, and a branch leaving the station of Grenelle to the port of Sèvres (today Balard) was added to the route.  The trains alternately traveled along the two branches.
  Work on the line began in April 1908 with an underwater construction site in the Seine between the stations of Concorde and Invalides on one end and another construction site at Pont Mirabeau on the other.  The first site was completed in January 1911, after being delayed during the 1910 Great Flood of Paris.
  The tunnel under the Seine is made up of five box beams, between 35 and 44 meters long, pre-assembled on the quai de Javel (now the quai André-Citroën).  This tunnel was dug using the method of wooden planks on top of a foundation made of chalk and shale. It contains a lining of iron positioned under a brick roof.  The construction of the tunnel on the rive droite was more delicate because of its less solid alluvium, thus three additional beams were required which were assembled at Mirabeau.  The presence of a railroad line running from Invalides to Versailles (line C of the RER) made work particularly difficult, and a final beam was buried under the tunnel.  Work began in August 1907 but was not finished until 1913, also delayed by the 1910 Great Flood of Paris.
  The section between Invalides and Javel did not present any particular difficulties and was completed in 1910.  The Grenelle station is constructed according to a double-station configuration, which allows for the simultaneous departure of trains towards Auteuil and the planned branch towards the porte of Sèvres on its own level, as well as the arrival of both trains in the opposite direction in a central platform on another level.
  While work at pont Mirabeau was ongoing, the line was opened to the public on 13 July 1913 between the stations Beaugrenelle and Opéra and was extended on 30 September 1913 to Porte d'Auteuil. In 1914, line 8 contained fifteen stations between Porte d'Auteuil and Opéra.
caption: Blueprint of the underwater tunnel to pont Mirabeau.
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