Open invitation to tender, deadline 18/06/2021, for support service to the management of the Altza-Galtzaraborda section construction project on the San Sebastian (Donostia) metro line. The section includes the Altza-Pasaia tunnel (934.20 m), Pasaia-Galtzaraborda tunnel (724 m), E. Pasaia cut & cover tunnel (221.80 m), approach and ventilation tunnel c/ SASUATEGUI- (339.13 m), Safety tunnel (53 m), ventilation tunnel c/LORETE (28.50 m), ventilation tunnel Parque Molinao (18.80) and ventilation tunnel c/PARKE (24.04 m). For tender documents click here, where tenders must be sent. The contract value is EUR 1.86 million excluding VAT, duration of the contract will be 50 months. Contact ETS - Euskal Trenbide Sarea, Bilbao, tel +34 946572600, fax +34 946572601, email ets@ets-rfv.eus. For further on the tender, please click here. Ref.n. P20021863. 22/21.