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Estuaries route

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Normandy is ideally located on the Estuaries motorway:
- from the Somme and the Seine, in the North
- from the Loire and the Gironde, in the South
A vital itinerary linking the entire European Atlantic shoreline and offering improved port accessibility.



The Estuaries motorway is a motorway development stretching across 1,300km and linking Dunkirk to Bayonne whilst avoiding Paris. The motorway owes its name to the four major estuaries it crosses: the Somme, the Seine, the Loire and the Garonne.
This Estuaries motorway is a crucial link in the French portion of the European north-south motorway, facilitating exchange between Spain - the French Atlantic and Channel coastlines - Great Britain and Northern Europe.

The Pont de Normandie (Normandy bridge), connecting the Upper and Lower Normandy regions, crosses the Seine and links Le Havre (Seine Maritime) on the northern bank, to Honfleur (Calvados) on the southern bank. Inaugurated in 1995, the bridge was, at the time, the world's highest cable-stayed bridge. Its total length is 2,141m, and its main span 856m. The pylons measure 214m.
The bridge is toll-operated.

On its southern portion, the Estuaries motorway follows, first of all, the A13 from Honfleur to Caen for 95km (3 tolls) then the A84 from Caen to Rennes (toll-free). The Lower Normandy portion of the A84 travels through Calvados then Manche over a total distance of 115km (Saint-James). The motorway links Caen to the south Manche (Avranches) in less than an hour, and Caen to the centre of Rennes in one hour and a quarter.

From Caen, traffic is around 20,000 vehicles per day in both directions, including 14% of heavy goods vehicles (Rennes-Caen) and 11.5% (Caen-Rennes). Approaching Villers-Bocage, traffic decreases to 16,300 vehicles per day with 14% of heavy goods vehicles in both directions. On leaving the Manche department, traffic remains heavy with around 12,000 vehicles per day, 16% of which are heavy goods vehicles.

It is worth noting that statistics provided by the Calvados Departmental Directorate for Planning and Infrastructure (DDE), spread heavy vehicle traffic across the entire year. Therefore, the number of daily vehicles on the road is significantly higher since they do not travel on weekends and public holidays.

This motorway is a major North-South exchange and heavy transport route, from Picardy, Normandy, Brittany and Pays de la Loire to Aquitaine, in other words, France's entire English Channel - Atlantic shoreline.
The motorway successively follows the A16 to Abbeville then the A29 to Le Havre, the A13 to Caen, the A84 to Rennes, the RN137 (dual carriageway) to Nantes, the A83 to Niort, the A10 to Bordeaux and, finally, the A63 to Bayonne.





  • A84 EN BASSE-NORMANDIE
  • Panneau routier
  • Camion sur une autoroute
  • Infrastructures de la Normandie
  • Circulation sur une 4 voies d'un camion