Closure of an interchange between Dol and Dinan during the holidays
School holidays are approaching, and with them, significant changes on Brittany’s roads. Between Dol-de-Bretagne and Dinan, major works are continuing to improve the La Ville-ès-Nonais interchange on the RN 176. Scheduled to last several weeks, this period of work will cause traffic restrictions affecting many users, both local and passing through. Those wishing to avoid the inconvenience of these temporary closures should plan ahead.
Works on the La Ville-ès-Nonais interchange: a necessity for Brittany
Since the beginning of the year, Brittany has been undergoing significant changes, particularly with the development and modernization of its road infrastructure. Between Dol-de-Bretagne and Dinan, the La Ville-ès-Nonais interchange is one of the many projects aimed at improving road traffic flow. The works mainly involve adding entry and exit ramps that will facilitate journeys for users.
The two slip roads in question are currently out of service, forcing drivers to take detours via the Saint-Jean and Saint-Hubert ports on the RD 366 to access the RN 176. This project, which will streamline travel between La Ville-ès-Nonais and Plouër-sur-Rance, is also crucial for supporting the region’s economic and tourism development.
- Direct impacts of the construction: Regular users of this road should expect disruptions during the interchange closure phase, particularly during the April school holidays. Both slip roads will be completely closed to the public from April 7th to 18th, requiring adjustments to travel patterns. Given the strategic importance of this route, it is essential to explain the anticipated effects. Slip road closures:
- The on-ramps and off-ramps will be inaccessible during this period. Publication ban on the RD 366 bridge:
- No vehicles will be allowed to cross, making some crossings impossible. Alternative routes:

Check the temporary closure of the interchange between Dol and Dinan during the holidays, including the exact dates, alternative routes, and tips to avoid disruptions during your travels.
Traffic diversion: crucial anticipation
To avoid confusion, it is crucial that road users are aware of the alternative routes. Familiarizing yourself in advance with any potential diversion routes will help minimize the disruptions associated with these works. To reach La Ville-ès-Nonais from Saint-Malo, Dol-de-Bretagne, or even Rennes, you will have to take the RD137, which can cause considerable delays during peak periods.
| Furthermore, those heading towards the Saint-Jean port will have to continue on the RN176 to Plouër to bypass the closure, highlighting the importance of careful journey planning. | |
|---|---|
| Destination | |
| Alternative Route | From Dinan to La Ville-ès-Nonais |
| Châteauneuf interchange via RD137 | From Saint-Malo to La Ville-ès-Nonais |
Sur le meme sujet
RN176 to Plouër then RD366
From Dol to La Ville-ès-Nonais
- Use the Châteauneuf interchange Safety during the works
- Safety is of paramount importance throughout the duration of the construction. For road users and workers on site, measures will be implemented to ensure safe traffic flow. Signs and traffic control personnel will be present to guide motorists. However, responsible behavior from road users is also expected. Increased vigilance:
- Drivers must pay attention to temporary road signs. Respecting detours:
Accurate knowledge of detour routes is essential.
Sur le meme sujet
Understanding the importance of these works is necessary to encourage patience.
Therefore, while being patient with the temporary inconveniences, motorists must also keep in mind that these efforts will be beneficial in the long run, not only for traffic flow but also for safety on these regional roads.
A significant investment for the future of the region
| These works represent a considerable investment for the future of Brittany’s infrastructure. The modernization of the La Ville-ès-Nonais interchange, estimated at approximately €3 million, is largely financed by state funds (60%) and by the Ille-et-Vilaine Department (40%). This investment demonstrates the commitment of local authorities to sustainable development and road safety. | |
|---|---|
| The Need to Modernize Infrastructure | Modernizing transport infrastructure has become essential in this drive to boost the regional economy. This project will alleviate congestion on certain roads and significantly reduce travel times for users. It also reflects a broader commitment to developing a Brittany that is attractive to both its residents and visitors. |
Sur le meme sujet
Improving the interchange will also facilitate access to surrounding business parks, thereby stimulating the local economy and, consequently, the quality of life for Breton residents.
Total Cost of Works
Funding
€3 million 60% State, 40% Ille-et-Vilaine Department Timeline of Next Steps and Further Information With the aim of maximizing transparency, local authorities will regularly publish updates on the progress and upcoming closure periods. Ensuring the smooth running of the works while keeping users informed remains a priority during this crucial phase. Upcoming Closure Dates and Works
- Users should prepare for several phases of restrictions until the works are completed. Among the future dates, an additional closure may be implemented depending on the progress of the works and weather conditions. It is advisable to consult announcements on websites such as Actu Bretagne
- or Ouest-France
- to stay informed. Scheduled Closure:

Consultations:
































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