SWR to conduct Final Location Survey for Rail Network Expansion

In a significant move to enhance railway infrastructure, the South Western Railway (SWR) is set to conduct a Final Location Survey (FLS) for various projects, including the doubling and quadrupling of railway lines.

The Chief Administrative Officer, Construction, on behalf of The President of India, has invited E-Tenders for these crucial survey projects within the SWR/CN region.

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Project Details

Advertised Value: ₹380,956,390.50
Completion Period: 24 Months

Tentative FLS Works

1. Doubling between Bengaluru (SBC) – Tumakuru (TK): 3rd & 4th line (70 km)
2. Doubling between Bangarpete (BWT) – Jolarpettai (JTJ): 3rd & 4th line with ghat section (72 km)
3. Doubling between Chamarajanagar (CMNR) – Mysuru (MYS): (60 km)
4. New Circular Rail Network around Bengaluru City: Nidavanda (NDV) – Doddaballapur (DBU) – Devanahalli (DHL) – Malur (MLO) – Heelalige (HLE) – Hejjala (HJL) – Solur (SOLR) – Nidavanda (NDV) (287.60 km)
5. Hospet-Vyasa-colony: Doubling of Existing line (58 km)
6. Doubling between Hubballi (UBL) – Hospet (HPT): 3rd & 4th line (143 km)
7. Doubling between Hassan (HAS) – Kunigal (KIGL) – Chickbanavara (BAW): (166 km)
8. Doubling between Bengaluru (SBC) – Mysuru (MYS): 3rd & 4th line (137 km)
9. Ginigera-Raichur: Doubling of Existing line (166 km)
10. Vyasa-colony-Kuttur-Amaravathi colony: Doubling of Existing line (196 km)
11. Malagur-Madakshira-Hiriyur: New line doubling (110 km)
12. Gadag-Wadi: Doubling of Existing line (257 km)

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Stages of FLS Work

Stage – 1: Initial study of Satellite Imagery, DEM, DSM, feature extraction, and development of topographic maps. Establishing control points and verifying obligatory points, followed by evaluation of horizontal and vertical alignment.

Stage – 2: Finalization of alignment using photogrammetric techniques, Drones, and LiDAR survey. Includes geotechnical and hydrological studies, approval from Railways, and preparation of topographical maps.

Stage – 3: Preparation of general arrangement/drawings for structures, Yard engineering scale plans, layout plans, and detailed estimates. Works commence after finalization/approval of L-section in stage 2.

Also read | Tender called for Final Location Survey for Quadrupling Hosapete Ballari section

Final Location Survey (FLS)

A final location survey is the first important step that is carried out during detailing of any railway project. It is in this survey where multidisciplinary investigations like topographical, geotechnical, hydrological etc. are taken up and the consolidated data is used to finalise route alignment and identify land usages. 

The SWR anticipates these developments will significantly contribute to the expansion and efficiency of the railway network in the region. Work orders will be issued as per the sanction of FLS, marking a crucial step towards the realization of these ambitious projects.

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