Line 1 of the Lille Metro is one of two lines serving the Lille metropolitan area in northern France. Spanning the cities of Villeneuve-d'Ascq and Lille, it connects in the east to in the west.

Conceived in the 1960s as part of Lille's decentralization efforts, Line 1 was inaugurated on April 25, 1983, initially linking Quatre Cantons to . The line reached its current extent on May 2, 1984, with the extension to CHU–Eurasanté (then CHR B-Calmette). It holds the distinction of being the world's first metro line to implement the Véhicule Automatique Léger (VAL) technology, developed at the University of Lille in the 1970s—originally dubbed "Villeneuve-d'Ascq – Lille" (VAL). Since its debut, the line has proven immensely popular, handling 165,000 daily trips by 2013.

Stretching 12.5 kilometers (7.8 miles), with 9 kilometers (5.6 miles) underground, Line 1 comprises 18 stations. Initially equipped with VAL 206 trains, these were largely replaced by VAL 208 models starting in 2008. On November 17, 2024—after nearly 41 years of service with the original VAL automation—Line 1 transitioned to Alstom's modern Urbalis Fluence system, now exclusively operating VAL 208 trains as part of an ongoing modernization effort.

History Linking Lille and Villeneuve-d'Ascq In the 1960s, Lille faced urban challenges: a congested city center overwhelmed by cars and buses, contrasted with poorly connected suburban areas. To address this, planners envisioned decentralizing parts of the city, leading to the creation of the (EPALE) in 1968. EPALE aimed to develop a new town near Lille, but site selection was proved complex due to limestone quarries that would inflate construction costs.

Professor and his team at the Faculty of Sciences offered a solution. Leveraging their expertise in telecommunications and electromagnetic propagation, they devised an electromagnetic mapping tool to identify suitable locations, ultimately settling on Villeneuve-d'Ascq. Pleased with this collaboration, EPALE and the Communauté Urbaine de Lille (CUDL) tasked Gabillard with designing a rapid, high-frequency transit system to further integrate the region. His research culminated in 1971 with the patent for the VAL system ("Villeneuve-d'Ascq – Lille"), an automated metro.

In 1974, EPALE, with the support of , President of the CUDL, presented a project for the development of public transport in the Lille metropolitan area, including four metro lines. The first line was a priority for the CUDL, as it would link Villeneuve-d'Ascq to Lille, much to the dismay of the elected representatives of Roubaix and Tourcoing and the , who wanted to make the Lille-Roubaix-Tourcoing axis "the real spine of the metropolis". The consequence of this ambitious project was a sharp increase in the projected budget, from 230 million to 875 million francs.

Despite the 1976 decree declaring the work on line 1 to be in the public interest, the CUDL saw the start of work on the metro delayed by the Secretary of State for Transport, who refused to validate the concession signed by the CUDL for construction. As a result, the urban community decided to take charge of the metro works itself and released the necessary funds.

Construction, Opening, and Expansion Construction began in 1977, with Matra building the Quatre Cantons depot in Villeneuve-d'Ascq. By late 1978, SOFRETU deployed 35 engineers to oversee underground work between and Porte des Postes. The first segment, from to the depot (doubling as the control center), was completed in September 1979, hosting initial trains without full automation. This section, between the Cité Scientifique station and the garage-workshop that also serves as the central control station (PCC), saw the first trains with the equipment but without the automated systems.

For the rest of the line, viaducts are preferred in areas with little or moderate urban development. Viaducts are the least expensive sections (cut-and-cover and underground sections cost 1.7 and 3.4 times more respectively). However, residents of the district of Villeneuve-d'Ascq, concerned about their environment, demanded and obtained the passage of the metro through their district in an open cut instead of a viaduct. In Mons-en-Barœul, the switch from a viaduct to an underground route was mentioned for a time during a neighborhood survey in 1974 concerning the first line, but the following year, the CUDL decided to remove the town from the line's route, thus reducing costs and allowing the metro to be built underground.

Construction of the Villeneuve-d'Ascq viaduct began in January 1979 and was completed in February 1980. The 1.225-kilometer viaduct is made up of nine independent sections ranging from 110 to 170 meters in length. The construction of the viaduct was primarily the subject of studies into the noise, vibrations and electromagnetic disturbances that could be caused by the automatic metro.

Cut-and-cover work involved the long section between the future and stations. Both open and cut-and-cover operations caused considerable disruption to local traffic, which was nevertheless maintained thanks to a number of techniques. After earthworks on the relevant lanes, the traffic gallery was put into operation. In addition to the work directly concerning the trench, related work was required to adapt the roadways and build crossing structures. The stations, which are built separately from the line, were constructed using the trenching method.

Deep tunnels, the costliest option, were essential in dense urban zones like central Lille. Dug just below the water table, the tunnel required 11 access points and employed 160 workers. Line 1 officially opened on April 25, 1983—the world's first VAL metro and fully accessible to people with disabilities. President François Mitterrand arrived by helicopter at Quatre Cantons, greeted by Notebart, Villeneuve-d'Ascq mayor , Gabillard, and CUDL transport director Bernard Guilleminot. After touring Gare Lille-Flandres, he unveiled a plaque at .

Although the line was inaugurated in April 1983, it was only partially accessible between and , whereas the CUDL had planned a western terminus as far as station in the 1970s. Work was still underway on the section between République and CHR B-Calmette station, mainly involving track laying and station layout. This section, which passes through the Wazemmes district and Lille's , went into service on May 2, 1984. Line 1, designed by the CUDL in the 1970s, was therefore fully operational by this date.

Route and Stations Route

The 12.542-kilometer Line 1 runs from Quatre Cantons–Stade Pierre-Mauroy to CHU–Eurasanté, with 8.922 kilometers (71%) operating underground in tunnel sections. The remaining route consists of elevated viaducts and surface-level segments. Stations are spaced an average of 722 meters apart.

The line originates at the Quatre Cantons depot in Villeneuve-d'Ascq, which serves as both a train storage facility and maintenance center. From this northern terminus, the initial open-trench section runs north to station. The alignment then transitions to a 1,225-meter elevated viaduct spanning Avenue Poincaré and Avenue Jean-Perrin, providing service to the University of Lille's . The viaduct terminates at station, located near the university library. After crossing Boulevard de Tournai, the line returns to an open-trench configuration through Villeneuve-d'Ascq's Triolo district, where it serves station.

After serving the Triolo district and crossing the , the line turns westward and transitions into a covered trench before splitting to reach station. This station has a unique layout compared to others on the line, featuring a central platform with tracks on either side (most stations have a central track flanked by two side platforms). Beyond the station, the trench merges back into a two-track alignment and continues underground beneath the Pont-de-Bois district, where it serves the eponymous station. station provides connections to the regional rail network via an adjacent railway halt.

Still in a cut-and-cover configuration, the line then enters Hellemmes, following the northwestward trajectory of Rue Roger-Salengro, the municipality's main thoroughfare. Two stations are located along this section: and .

After passing through Villeneuve-d'Ascq and Hellemmes, the line enters Lille beneath Rue Pierre-Legrand, still in a covered trench. The first two stations serving Lille proper are and . Beyond Fives station, the alignment transitions into a deep tunnel, following Rue de Bouvines to reach station, built beneath its namesake square.

The following table lists video clips of interstations along Line 1:

Interstation Segment Video Quatre Cantons–Stade Pierre-Mauroy ↔ Cité Scientifique–Professeur Gabillard Cité Scientifique–Professeur Gabillard ↔ Triolo Triolo ↔ Villeneuve-d'Ascq–Hôtel de Ville Villeneuve-d'Ascq–Hôtel de Ville ↔ Pont de Bois Pont de Bois ↔ Square Flandres Square Flandres ↔ Mairie d'Hellemmes Mairie d'Hellemmes ↔ Marbrerie Marbrerie ↔ Fives Fives ↔ Madeleine Caulier Madeleine Caulier ↔ Gare Lille-Flandres Gare Lille-Flandres ↔ Rihour Rihour ↔ République–Beaux-Arts République–Beaux-Arts ↔ Gambetta Gambetta ↔ Wazemmes Wazemmes ↔ Porte des Postes Porte des Postes ↔ CHU–Centre Oscar-Lambret CHU–Centre Oscar-Lambret ↔ CHU–Eurasanté

The line then turns southwest through central Lille, passing beneath Rue Faidherbe, Rue des Manneliers, and the Grand'Place before reaching , where station is situated. It continues to , serving station, then follows Rue d'Inkermann, Rue Colbrant, and Rue de Flandre to reach the Wazemmes district, stopping at station. After a short inter-station segment, it arrives at station.

The alignment proceeds beneath Rue des Postes and Place Barthélémy Dorez, where the interchange station Porte des Postes is located. The line then emerges to ground level, runs alongside the A25 motorway in an open trench, and ascends onto a viaduct to serve the Lille University Hospital Center (CHU) at station before terminating at station.

Stations Lille Metro Line 1 spans 13.5 km, serving 18 stations from CHU–Eurasanté in southwestern Lille to Quatre Cantons–Stade Pierre-Mauroy in Villeneuve-d'Ascq. The line opened on April 25, 1983, with 15 stations, extended to Pont de Bois on May 18, 1984, and reached its current eastern terminus on February 3, 1989. It connects the municipalities of Lille, Mons-en-Barœul, and Villeneuve-d'Ascq, offering links to Lille Metro Line 2, Ilévia buses, and SNCF rail services, alongside major cultural, educational, and commercial destinations.

Renamed Stations

Since its inauguration, Lille Metro Line 1 has seen several stations renamed to reflect urban developments, cultural tributes, or institutional changes. The first modification occurred in 1994 when Gares station was redesignated Gare Lille-Flandres to distinguish it from the newly opened Gare Lille-Europe station. Three years later, République station acquired the suffix Beaux-Arts (1997) following the renovation of the adjacent Palais des Beaux-Arts.

A significant update occurred on 6 March 2017, when four stations were simultaneously renamed: CHR B-Calmette became CHU–Eurasanté, CHR Oscar-Lambret was updated to CHU–Centre Oscar-Lambret, Hellemmes transitioned to Mairie d'Hellemmes, and Lezennes was rebranded Square Flandres. Most recently in 2024, Caulier station was refined to to explicitly honor the 17th-century Lille philanthropist.

Unique and Themed Stations