A12 autoroute
Encyclopedia
Autoroute A12, formerly known as the Autoroute de Bretagne ("Motorway of Brittany"), is a French autoroute
located in Yvelines
, near Paris. It branches off from A13
(also known as the Motorway of Normandy) at an exchange known as the Triangle de Roquencourt located in the town of Bailly
and merges with RN12 and RN10 at Bois-d'Arcy
. Its total length is 8.5 km (5.3 mi). Access is free.
It is interesting to note that it has not been made any longer since its construction, which makes it the oldest French motorway to have remained on its original route.
Its history started in 1934 with the publication of Plan Prost, which envisaged a network, already dense, of motorways in Île-de-France
. The A12 was then known as the "Autoroute de Bretagne", which is a reference to its proximity to the nearby RN12
route which extends to Brittany. Its construction began in 1936 with the first deforestation on the site of the Triangle de Rocquencourt. Work ceased at the outbreak of war in 1939, with only earthworks having been executed. Work began again in the post-war period and lasted until 1950.
The motorway has not undergone any significant changes since that time. The changes that have occurred include the covering of a section at the School of Saint Cyr and the widening of the roadway to 4 lanes in one direction and 3 in the other. It is on this motorway that one of the first automatic radars in Yvelines were installed.
There are plans to extend the A12 in the medium-term (2015–2020) up to Ablis and the A11
. It is anticipated that the route will go around the town of Trappes. Beyond that point, the existing highway N10 will be reused.
This project, started back up in 2004 by the Transport Minister Gilles de Robien
, caused significant concern among locals, such as the inhabitants of South of Yvelines. They object as they feel that this new section of highway will introduce transit of heavy lorries between the A10/A11 motorways and the western A86 tunnel (Rocquencourt), with traffic predictions as high as 100,000 vehicles per day. Others object to the extension crossing the Haute Vallée de Chevreuse Regional Park. A public consultation is expected to be organised in 2006.
Autoroutes of France
The Autoroute system in France consists largely of toll roads, except around large cities and in parts of the north. It is a network of worth of motorways. Autoroute destinations are shown in blue, while destinations reached through a combination of autoroutes are shown with an added autoroute logo...
located in Yvelines
Yvelines
Yvelines is a French department in the region of Île-de-France.-History:Yvelines was created from the western part of the defunct department of Seine-et-Oise on 1 January 1968 in accordance with a law passed on 10 January 1964 and a décret d'application from 26 February 1965.It gained the...
, near Paris. It branches off from A13
A13 autoroute
Autoroute 13, or L'Autoroute de Normandie links Paris to Caen, Calvados.The motorway starts in Paris at the Porte d'Auteuil, a former gate of the Paris walls, and ends at Mondeville's Mondeville 2 exchange junction on Caen's ring road...
(also known as the Motorway of Normandy) at an exchange known as the Triangle de Roquencourt located in the town of Bailly
Bailly, Yvelines
Bailly is a commune in the Yvelines department in north-central France.-External links:*...
and merges with RN12 and RN10 at Bois-d'Arcy
Bois-d'Arcy, Yvelines
Bois-d'Arcy is a commune in the Yvelines department in north-central France.-References:*...
. Its total length is 8.5 km (5.3 mi). Access is free.
It is interesting to note that it has not been made any longer since its construction, which makes it the oldest French motorway to have remained on its original route.
Its history started in 1934 with the publication of Plan Prost, which envisaged a network, already dense, of motorways in Île-de-France
Île-de-France (région)
Île-de-France is the wealthiest and most populated of the twenty-two administrative regions of France, composed mostly of the Paris metropolitan area....
. The A12 was then known as the "Autoroute de Bretagne", which is a reference to its proximity to the nearby RN12
Route nationale 12
The Route nationale 12, or RN12, is a trunk road in France connecting Paris with Brittany. The road forms part of European route E50.-History:...
route which extends to Brittany. Its construction began in 1936 with the first deforestation on the site of the Triangle de Rocquencourt. Work ceased at the outbreak of war in 1939, with only earthworks having been executed. Work began again in the post-war period and lasted until 1950.
The motorway has not undergone any significant changes since that time. The changes that have occurred include the covering of a section at the School of Saint Cyr and the widening of the roadway to 4 lanes in one direction and 3 in the other. It is on this motorway that one of the first automatic radars in Yvelines were installed.
There are plans to extend the A12 in the medium-term (2015–2020) up to Ablis and the A11
A11 autoroute
The A11 autoroute is a motorway which connects Paris with Nantes via Le Mans and Angers. It is called L'Océane .- Regions crossed :The following list indexes the sites worth visiting within 14 km of the road.* Paris* Chartres* Le Mans...
. It is anticipated that the route will go around the town of Trappes. Beyond that point, the existing highway N10 will be reused.
This project, started back up in 2004 by the Transport Minister Gilles de Robien
Gilles de Robien
Count Gilles de Robien is a French politician. He is the son of count Jean de Robien and of Éliane Le Mesre de Pas. The Robien are a noble family originating from Brittany....
, caused significant concern among locals, such as the inhabitants of South of Yvelines. They object as they feel that this new section of highway will introduce transit of heavy lorries between the A10/A11 motorways and the western A86 tunnel (Rocquencourt), with traffic predictions as high as 100,000 vehicles per day. Others object to the extension crossing the Haute Vallée de Chevreuse Regional Park. A public consultation is expected to be organised in 2006.
List of junctions
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| Junction number & name | Northbound exits | Southbound exits |
| A13 A13 autoroute Autoroute 13, or L'Autoroute de Normandie links Paris to Caen, Calvados.The motorway starts in Paris at the Porte d'Auteuil, a former gate of the Paris walls, and ends at Mondeville's Mondeville 2 exchange junction on Caen's ring road... |
A13 A13 autoroute Autoroute 13, or L'Autoroute de Normandie links Paris to Caen, Calvados.The motorway starts in Paris at the Porte d'Auteuil, a former gate of the Paris walls, and ends at Mondeville's Mondeville 2 exchange junction on Caen's ring road... |
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| D134, Saint-Cyr-l'École Saint-Cyr-l'École Saint-Cyr-l'École is a commune in the western suburbs of Paris, France. It is located from the center of Paris.It used to host the training school for officers of the French army, the École Spéciale Militaire de Saint-Cyr , which was relocated to Coëtquidan in 1945.The old buildings of the ESM are... |
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| N12 Route nationale 12 The Route nationale 12, or RN12, is a trunk road in France connecting Paris with Brittany. The road forms part of European route E50.-History:... |
N12 Route nationale 12 The Route nationale 12, or RN12, is a trunk road in France connecting Paris with Brittany. The road forms part of European route E50.-History:... |
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| A12B (entrance only) | ||
| N10, Montigny-le-Bretonneux Montigny-le-Bretonneux Montigny-le-Bretonneux is a commune in the Yvelines department in the Île-de-France region in north-central France. It is located in the south-western suburbs of Paris from the center, in the "new town" of Saint-Quentin-en-Yvelines, of which it is the central and most populated... (Saint-Quentin-en-Yvelines Saint-Quentin-en-Yvelines Saint-Quentin-en-Yvelines is a new town in the French département of Yvelines. It is one of the original five villes nouvelles of Paris and was named after the Saint Quentin Pond, which was chosen to become the town's centre. The town was built from a greenfield site starting in the 1960s. In... ) |
N10, Montigny-le-Bretonneux Montigny-le-Bretonneux Montigny-le-Bretonneux is a commune in the Yvelines department in the Île-de-France region in north-central France. It is located in the south-western suburbs of Paris from the center, in the "new town" of Saint-Quentin-en-Yvelines, of which it is the central and most populated... (Saint-Quentin-en-Yvelines Saint-Quentin-en-Yvelines Saint-Quentin-en-Yvelines is a new town in the French département of Yvelines. It is one of the original five villes nouvelles of Paris and was named after the Saint Quentin Pond, which was chosen to become the town's centre. The town was built from a greenfield site starting in the 1960s. In... ) |
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