European Court of Auditors. Special report 02/2026: EU transport infrastructure – Further delays and some cost increases, but a reinforced governance framework is in place for the future (an update of ECA special report 10/2020)

Megaprojects are key to the completion of the EU trans‑European transport network. In 2020, we published a special report showing major delays, cost increases, weak coordination between member states, and weaknesses in the Commission’s oversight. This report provides an update, taking into account developments since then. We observed a further increase in the combined cost of the megaprojects, mainly driven by two of them, and additional delays which imply that the EU core network will not be completed by the 2030 deadline. In 2024, new legal provisions were introduced with the potential to improve the Commission’s oversight of the implementation of the network, although the changes will mostly be relevant for projects that started later than the megaprojects we audited.
https://www.eca.europa.eu/en/publications/sr-2026-02