Open invitation to tender, deadline 25/06/2024, for the E&M refurbishment in the Niklasdorf (1331 m, 1333 m), Massenberg (406 m, 433 m) and Oberaich (211 m, 178 m) tunnels on the Semmering motorway S06. Duration of the contract is from 16/08/2024 to 23/12/2026. Contact Asfinag AG, attn Marc Maierhofer, Vienna, tel +43 6646010814558, email marc.maierhofer@asfinag.at. Visit https://ted.europa.eu/en/notice/-/detail/303646-2024 . Ref.n. ProVia n. 115264. 21/24.