Kottavalasa-Koraput Doubling Railway Line Project
| Authority: | East Coast Railway |
| Location: | Andhra Pradesh (India) |
- The Kottavalasa-Koraput Doubling Project aims to enhance rail connectivity.
- It spans from Km. 45.483 to Km. 72.550, connecting Shivalingapuram Station to Borraguhalu Station.
- The project falls within the Waltair Division of the East Coast Railway.
Construction Tasks:
- Earthwork in formation and Blanketing.
- Minor bridges, Drains, and Barricading.
- Protection works.
- Construction of Major Bridges:
- Bridge No. 164 (1×18.3 + 1×24.40 + 2×30.50m CG)
- Bridge No. 169 (1×30.05m CG)
- Bridge No. 176 (1×30.05m CG)
- Bridge No. 197A (1×30.50m CG)
- Bridge No. 198 (2×24.40m CG)
- Bridge No. 267 (1×18.30 + 2×30.50m CG)
Tunnels:
- T8 & T9 (710m)
- T9A (490m)
- T9B (500m)
- T10 (720m)
- T11 (730m)
- T12 & T13 (1080m)
- T14 (620m)
- T15 (380m)
- T16 (750m)
- T17 (580m)
- T17A (580m)
- T18, T19, T20 (1420m)
- T21 to T27 (4220m)
- T28 (360m)
- T29 to T36 (5210m)
- T37, T38, T38A (1360m)
- T38B (350m)
Other Works:
- Open/underground excavation.
- Rock bolts and steel supports.
- Shotcrete and concrete works.
- Drainage systems.
- Ballast-less track works.
- Supply, erection, and testing for commissioning of E&M works.
Scope of Work
Pre-bid Engineering services for NHIDCL Package 2 include:- Review of Tender documents, Proposed alignment, Tunnel cross-sections & GAD drawings.
- Review & assessment of Geotechnical & Geological data.
- Highlighting discrepancies in tender documents and preparing technical queries.
- Preliminary design and BOQ preparation for Civil and MEP works.
- Preliminary Drawings & Technical notes for Tunnels & associate structures required for Prebid submission.
- Instrumentation and monitoring scheme.
- Likely construction methods.
- Assessment of site constraints.
- Response to bid queries during evaluation.
- Site visit.