Open invitation to tender, deadline 10/04/2024, for technical assistance to the management of works and coordination in matters of health and safety of the repair and modernization project of the Artxanda tunnels: La Salve-Txorierri (1,220 m), Ugasko- Txorierri (1,070 m) and Ugasko- La Salve ( 590 m). Click here for bid documents and here where tenders must be sent. Contract duration 26 months. Contact Interbiak Bizkaia SA, Bilbao, tel +34 944057000, email interbiaklicitacion@interbiak.eus. Visit https://ted.europa.eu/en/notice/-/detail/139639-2024. Ref.n. INT002/2024/ARM/AT. 10/24.