Paris Métro Line 9

Line 9
Line 9
	An MF 01 stock train at Billancourt
Overview
Locale	3 communes
Termini	Pont de Sèvres; Mairie de Montreuil
Connecting lines	; ;
Stations	37
Service
System	Paris Métro
Operator(s)	RATP
Rolling stock	MF 01; (74 trains in revenue service as of 30 July 2023.
Ridership	119,885,878 (2010) (avg. per year); 3rd/16 (2010)
History
Opened	1922
Technical
Line length	19.6 km (12.2 mi)
Track gauge	1,435 mm (4 ft 8+1⁄2 in) standard gauge
Electrification	750 V DC third rail
Conduction system	Conductor
Route map
Route map
	Hauts-de-Seine
	Paris
	temporarily shared
	with Line 10
	Paris
	Seine-Saint-Denis
proposed extension
proposed extension

Paris Métro Line 9 is one of the sixteen lines of the Paris Métro network currently open. It links Pont de Sèvres in Boulogne-Billancourt, the third most populated city in Ile-de-France, to Mairie de Montreuil, the second most populated city of Seine-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. The first of the historic lines not part of Fulgence 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 in Montreuil. Since then, Line 9 didn't evolve much in terms of layout.