Carcare (SV)–Predosa (AL) motorway link between the A6 Savona–Turin motorway and the A26 Voltri–Alessandria–Gravellona motorway, and extension of the alignment up to the western Ligurian coast (A10 “Autostrada dei Fiori”).

Project Objectives

The aim of the study is to identify the optimal configuration of a new motorway link capable of providing a transversal connection between the A26 Voltri–Alessandria–Gravellona motorway, the A6 Savona–Turin motorway, and the A10 “Autostrada dei Fiori” (Genoa–Ventimiglia).
The project is intended to reduce traffic flows along the A10 between Savona and Genoa and along the A26 between Genoa and Predosa, thereby improving the overall performance of the motorway network.

Project Description

The route alignment has been developed according to the following criteria:

• landscape integration
• environmental compatibility (reduction of emissions and noise, protection of ecological corridors and the hydrographic network, preference for tunnels and viaducts in sensitive areas)
• consistency with urban planning frameworks

The objective is to maximise the overall benefits of the project, including:

• improved effectiveness and efficiency of the transport system
• reduction of environmental impacts
• economic and social development of the territory
• economic and financial sustainability

The study was subsequently further developed through a Multi-Criteria Analysis (MCA), aimed at identifying the optimal alignment among the various alternatives proposed over time, with particular focus on the section between the A10 (Genoa–Ventimiglia) and the A6 (Savona–Turin).
The analysis is based on a structured set of objectives, translated into criteria and indicators that allow an objective assessment of how closely each alternative meets the project goals.

Expected Benefits

The implementation of the new infrastructure will deliver:

• effectiveness and efficiency of the transport system
• environmental sustainability of the infrastructure
• economic and social development of the territory
• economic and financial feasibility

Evaluation Method

The selection of the optimal alignment was carried out using the Multi-Criteria Analysis (MCA) method, which allows a comparative assessment of the design alternatives based on predefined evaluation criteria.
This approach makes it possible to identify the most balanced solution, effectively combining functional benefits, environmental sustainability and economic feasibility.

Design Solution

The selected alignment is significantly shorter than the current route (approximately 110 km) and represents the most efficient solution in terms of balancing expected benefits and environmental impacts.
It also contributes to improving the overall efficiency of the motorway system in North-West Italy, while strengthening connections with France and Western European regions within the framework of the TEN-T (Trans-European Transport Network).