The A31 project in Germany was intended to create a major autobahn that would connect the regions of North Rhine-Westphalia and Lower Saxony, but it was ultimately cancelled. However, some sections of roads that were planned as part of this project were constructed and are now considered vestiges of the A31 project.

Key Roads and Autobahns Related to the A31 Project:

1. A31 Autobahn: While the A31 itself was completed, it is important to note that it was originally envisioned to extend further than its current endpoints. The existing A31 runs from the Dutch border near Emden to the A1 near Bottrop, but the original plans included extensions that were never realized.

2. B70 (Bundesstraße 70): This federal highway runs parallel to parts of the A31 and serves as a significant route in the region. Some sections of the B70 were developed as alternatives to the A31 and can be seen as remnants of the original project.

3. B213 (Bundesstraße 213): This road also connects various towns and regions that were intended to be linked by the A31. It serves as a regional connector and reflects the infrastructure that was planned.

4. Local Roads: Various local roads and connectors that were built to accommodate traffic in the absence of the A31 extension can also be considered vestiges of the project. These roads often serve as important links between smaller towns and the existing autobahn network.

Historical Context:

The A31 project was initially proposed in the 1970s but faced various political, environmental, and financial challenges that led to its cancellation. The sections that were built were often intended to alleviate traffic and improve connectivity in the region, which remains important even without the full A31.

If you are looking for specific sections or more detailed information about the roads that were part of the A31 planning, local transportation authorities or historical records from the German government may provide further insights.