The Chief Administrative Officer (Construction), Secunderabad, South Central Railway, invites online bids via ireps.gov.in under NIT Nos. 35 & 36-CAO-C-SC-2026 for infrastructure works in the Hyderabad Division. Package 1 involves survey, design, and geotechnical investigation for a tunnel (7.50 km) and doubling line (10.45 km) between Medchal, Sanathnagar, and Upuguguda stations, valued at 4,19,79,626.21 Rupees with a closing date of July 29, 2026. Package 2 covers earthwork, bridge construction, track linking, and station works for doubling between Indalvai and Upuguguda stations, valued at 94,92,88,359.94 Rupees with a closing date of August 5, 2026.