Discuss the significance of railway multitracking projects in decongesting India's high-density corridors. Illustrate with recent CCEA approvals.

Multitracking — adding third and fourth lines to existing routes — is Indian Railways' primary tool for capacity augmentation on saturated trunk corridors, where line utilisation exceeds 100% and passenger traffic crowds out freight. With the National Rail Plan targeting a rise in rail's freight modal share from about 27% to 45% by 2030 [1], decongestion is now as critical as new line construction.

Why high-density corridors need multitracking

• Capacity without new alignment: uses existing right-of-way, so land acquisition and forest clearance burdens are far lower than greenfield lines.
• Segregating traffic: extra lines let slow freight and fast passenger services run separately, raising average freight speed — an explicit NRP goal [1].
• Corridor focus: the Howrah–Chennai east-coast trunk route, carrying coal, steel and port-bound cargo, is among the most congested [2].

Recent CCEA approvals as illustration

• The CCEA approved four multitracking projects across eight districts in West Bengal, Odisha, Tamil Nadu and Andhra Pradesh, adding about 410 km at roughly ₹9,450 crore, for completion by 2030-31 [2].
• These include the Kharagpur–Bhadrak 4th line (~173 km), Bhadrak–Haridaspur 4th line, Gummidipundi–Gudur 3rd & 4th line and Cuttack–Paradeep 3rd & 4th line — the last directly strengthening Paradeep Port evacuation, complementing Sagarmala's port-connectivity pillar [2][3].
• Such packages are cleared in tranches under PM Gati Shakti, which enables integrated multimodal planning across the seven infrastructure engines including railways and ports [4].

Wider significance

• Economic: lower logistics costs, construction-phase employment, and demand for steel and cement [2].
• Social and regional: connectivity gains for lakhs of people in largely rural project districts [2].
• Environmental: shifting cargo from road to rail cuts oil imports and emissions, aiding climate commitments [1].

Multitracking thus converts existing assets into fresh capacity at modest incremental cost. Its promise, however, rests on timely execution — states must expedite land acquisition and right-of-way, while Gati Shakti sequencing ensures rail capacity matures alongside port and industrial demand. Sustained investment of this kind is central to a Viksit Bharat built on efficient, low-carbon logistics.