Indian Railways Approves ₹895 Crore Metro Power Upgrade and Bridge Infrastructure Projects

In a landmark investment, ₹671.72 crore has been approved to strengthen the North–South Corridor of Kolkata Metro, one of India’s oldest metro systems.

In a decisive move to modernise rail infrastructure and meet rising passenger and freight demands, Indian Railways has sanctioned projects worth ₹895.30 crore, focusing on metro power system augmentation in Kolkata and critical bridge infrastructure strengthening in Jharkhand–West Bengal's industrial corridor.

The twin initiatives are expected to significantly enhance capacity, safety, and operational efficiency, while supporting both urban mobility and heavy freight movement across key economic zones.

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Kolkata Metro Set for Major Capacity Leap with ₹671.72 Crore Upgrade

In a landmark investment, ₹671.72 crore has been approved to strengthen the North–South Corridor of Kolkata Metro, one of India's oldest metro systems.

Key Components of the Upgrade

• 7 New Traction Substations (TSS)

  • Investment: ₹291.06 crore

  • Aim: Strengthen power availability for high-frequency train operations

• Power System Augmentation (₹380.66 crore)

  • Upgrade of Auxiliary Substations (ASS) and Traction Substations

  • Coverage: From Esplanade (KESP) to Kavi Subhash (KMUK)

  • Enhancement of elevated sections between Netaji (KNTJ) and Kavi Subhash (KKVS)

  • Major voltage upgrade: From 11 kV to 33 kV system

From 5-Minute to 2.5-Minute Train Frequency

Originally designed in the 1980s to support train intervals of around 5 minutes, Kolkata Metro is now under pressure due to surging ridership and urban expansion.

With this upgrade:

• Train headway will be reduced to 2.5 minutes

• Passenger handling capacity will effectively double

• Peak-hour congestion is expected to ease significantly

Addressing Aging Infrastructure Challenges

Many existing substations and electrical systems are:

• Operating at near-capacity limits

• Facing maintenance challenges due to obsolete components

The modernization will:

• Ensure reliable and uninterrupted power supply

• Reduce system failures and downtime

• Enable future scalability for network expansion

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₹223.58 Crore Damodar Bridge Project to Strengthen Freight Corridor

Complementing metro upgrades, Indian Railways has also approved a ₹223.58 crore project for bridge reconstruction and track enhancement in the Adra Division under South Eastern Railway.

Scope of the Project

• Construction of Bridge No. 520 (UP & DN lines – substructure)

• Location: Madhukunda–Damodar (MDKD–DMA) section

• Includes:

  • Yard remodelling

  • Track works on bridge approaches

Replacing Aging Infrastructure

The existing Damodar Bridge:

• UP Line: Built in 1965

• Down Line: Built in 1903

After decades of service, the structure shows:

• Significant aging and structural stress

• Need for foundation and substructure reconstruction

Strategic Importance: Industrial and Freight Backbone

This section is a critical railway artery, connecting:

• Asansol and Tatanagar

• Part of a Dedicated Freight Corridor (DFC) feeder route

• Core segment of the Sini–Purulia–Asansol coal corridor

With a traffic density of 67 Gross Million Tonnes (GMT), the line is heavily used for:

• Coal transportation

• Industrial freight movement

Boost to Industrial Belt

The upgraded bridge infrastructure is expected to enhance connectivity for major industries in the Durgapur–Asansol belt, including:

• IISCO Steel Plant

• ACC Cement Plant

• Thermal power stations

This will improve:

• Freight turnaround times

• Supply chain reliability

• Industrial productivity

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Modernisation Drive: Building Future-Ready Rail Systems

These investments reflect Indian Railways' broader strategy to:

• Enhance safety and reliability of aging infrastructure

• Increase network capacity to meet rising demand

• Integrate modern power and engineering systems

• Support both urban transit growth and freight efficiency

Key Outcomes Expected

• Higher metro frequency and better commuter experience in Kolkata

• Improved safety and durability of critical rail bridges

• Enhanced freight efficiency on key industrial corridors

• Reduced operational bottlenecks and maintenance risks

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Driving India's Rail Transformation

With urbanisation accelerating and freight demand surging, Indian Railways is prioritising high-impact, technology-driven infrastructure upgrades.

The ₹895 crore investment marks another step toward:

• Smart, resilient metro systems

• Robust freight corridors

• Seamless connectivity for economic growth

As India pushes toward becoming a $5 trillion economy, such infrastructure upgrades are expected to play a pivotal role in strengthening mobility, logistics, and industrial competitiveness.