Grand Paris Express is a modern rapid transit number of lines being constructed in the Île-de-France in France. The scheme includes four new lines for Paris Métro and extensions of the current Lines 11 and 14. Around 200 kilometres (120 mi) of additional track and 68 new stations are to be developed, able to serve a projected 2 million daily passengers. A total of €35.6 billion has been earmarked for the Grand Paris Express development, including a provision of €7 billion for risks and contingencies.
It’s a project of the century in the whole of Paris, and a scheme to give the Paris conurbation a infrastructure system commensurate with growing momentum and objectives. The Grand Paris Express lays down Paris firmly in the 21st century: after development in the 20th century of metro and RER regional express lines all extending out from the capital’s centre. The project’s aim is to develop a new ring network that permits suburb-to-suburb travel without having to go through the centre of Paris and also offering direct links to the airports. The project will bring significant benefits to the many residents who work or live in areas which were not well served by public transport. Another aim of the new system, is to limit urban sprawl around the city by densifying already urbanised parts that will now be linked to the heart of the conurbation and will gain from urban upgrading schemes around the new stations.
Grand Paris Express Timeline
The new public transport network was launched, considered as one of the most ambitious sustainable mobility schemes in the world, aimed to complete in 2030. The scheme called for extending existing lines and the developing four new lines, the 15, 16, 17 and 18. The 15 runs in a large circle around the suburbs of the city, the huge urban agglomeration that makes up Greater Paris, while the 16, 17 and 18 will link other suburbs and municipalities outside Paris city . In September, The Artemis consortium founded by engineering firms Arcadis, Artelia and BG Ingénieurs Conseils agreed on a 16-year €40m ($50m) contract with SGP to be the main project manager and oversee the development operations for Lines 15, 16 and 17.
In October, Société du Grand Paris (SGP) awarded the design tender for the Le Bourget station to Elizabeth & Christian de Portzamparc (AECDP). Miralles Tagliabue and Bordas + Peiro were also awarded contract for the Line 16, Clichy-Montfermeil station.
The Grand Paris Express construction started. The SNC-Lavalin consortium won a project management services tender from Société du Grand Paris (SGP) for Line 18 later in September.
Work began for extension of Line 14 near of Saint-Lazare station, the Paris metro second most congested. In accordance with the timeline set by the developers, by 2018 the line would be able to offer the passage of new trains with eight rather than of six cars, rising the capacity to 40,000 passengers per hour. The ICARE consortium were selected for the infrastructure design and supervision contract for Line 18 in February.
Around 20 Herrenknecht tunnel boring machines (TBMs) were in operation simultaneously in the year. Out of them, 16 are EPB shield machines with diameters ranging from 7725 mm to 9840 mm, 3 TBMs for variable density of 7710 mm to 9830 mm diameters and one vertical shaft sinking machine with diameters between 8300 mm and 11 900 mm.
On second October 2020, the President of Île-de-France Mobilités, Valérie Pécresse and of the Île-de-France Region, Thierry Dallard, Chairman of the Management Board of the Société du Grand Paris, and the Chairman and CEO of Alstom Henri Poupart-Lafarge, disclosed the design of the future metros for new lines 15, 16 and 17 of Île-de-France at the inauguration of the exhibition Les lignes du design (Design Lines).
In accordance with the city administration’s ideas, Line 4 of the Metro, in the southern region of the city, will be extended by a couple of kilometers with development of two new stations. Currently the line stops at Montrouge, a banlieu in the south of the city, while the extension will bring it to Bagneux, even further south.
The Line 4, which runs through the city from north to south, Line 12 will also get extension work in the southern area including the construction of two stations.
Laurence, one of the ten tunnel boring machines (TBM) working on the 33km Grand Paris Express Line 15, bored through two stations and three services structures on the route, as well as under the Siene River, to breakthrough at Fort d’Issy-Vanves-Clamart station.
Grand Paris Express Line 15 which extends from Île de Monsieur shaft at Sèvres to the Noisy-Champs station, is one of four new metros lines being developed by Société du Grand Paris with CAP group, a Vinci Construction joint venture as the contractor.
The 9.87m diameter Laurence TBM was launched in January 2020 and has excavated 323,400m3 of material during the 4.2km drive from the Île de Monsieur shaft at Sèvres.