Open invitation to tender, deadline 30/04/2025, for consultancy services as Independent Engineer during Operation and Maintenance of the 6.412 m Sonamarg single tube bidirectional tunnel including approaches on 11.98km Srinagar Sonamarg section connecting National Highway n. 1 in the UT of JK on DBFOT annuity basis. Contact NHIDCL, New Delhi, tel +91-11-26768908, email gm8@nhidcl.com. Visit https://eprocure.gov.in/. Ref. n. 2025_NHIDC_855214_1. 15/25.