A public enquiry was started in 2010, with the line to enter service in 2020. In 2016, it was announced that opening would be delayed to 2024 or even 2030. In 2017, a financing agreement was reached between the state, the region, and local authorities. The
déclaration d'utilité publique was obtained in 2022. As of 2025, work is well underway, with mid-2026 targeted for the end of construction, and 2027 for the first passenger trips. ==See also==