Prior information notice for works to upgrade the safety systems in the 2.5km Cadiz tunnel, on the Seville - Cadiz railway line. Click here for tender documents and here where tenders must be sent. Estimated date of publication of contract notice: 31/12/2021. Value of the contract is EUR999,523.77, excluding VAT. Duration of the contract will be 6 months. Contact ADIF, Madrid, tel +34 917744804, fax +34 917674490, email contrataciondcc@adif.es. For further on TED tender, please click here. 14/21.