**Executive Summary**
On May 2, 2026, the Ministry of Railways sanctioned infrastructure and capacity augmentation projects totaling ₹895.30 crore. The approvals focus on upgrading the Kolkata Metro power system to support higher train frequencies and reconstructing critical bridge infrastructure in the Adra Division. These initiatives are designed to modernize aging systems, improve safety, and enhance connectivity for both passengers and industrial freight.
**Key Points / Main Content**
**Kolkata Metro Power System Augmentation (₹671.72 Crore)**
* **Capacity Expansion:** Enables the North–South Corridor to operate at a 2.5-minute headway, doubling the frequency from the current 5-minute design capacity.
* **New Infrastructure:** Provision of seven new Traction Substations at a cost of ₹291.06 crore.
* **System Upgrades:** Augmentation of Auxiliary Substation (ASS) and Traction Substation (TSS) systems from Esplanade Metro to Kavi Subhash – New Garia.
* **Voltage Enhancement:** Power supply systems will be upgraded from the existing 11 KV to a 33 KV system, including elevated sections from Netaji Metro to Kavi Subhash.
* **Reliability Improvements:** Addresses maintenance challenges and spare part shortages associated with original 1980s-era equipment and substations.
**Bridge Infrastructure Strengthening in Adra Division (₹223.58 Crore)**
* **Reconstruction Works:** Construction of substructures for Bridge No. 520 UP (built in 1965) and 520 DN (built in 1903) in the Madhukunda–Damodar section.
* **Associated Works:** Includes yard remodeling and track work in bridge approaches under the South Eastern Railway.
* **Structural Safety:** Necessary due to significant aging and signs of structural distress in the existing foundations and substructures.
* **Strategic Connectivity:** Strengthens a key link between Asansol and Tatanagar, serving as a vital coal corridor and Dedicated Freight Corridor (DFC) feeder route.
**Impact Analysis**
**Kolkata Metro Commuters**
**Impact**
Passengers will experience reduced waiting times due to the increased frequency of trains and improved service reliability through modernized power systems.
**Action Required**
No direct action is required; commuters will benefit from enhanced line capacity upon completion of the upgrades.
**Industrial Stakeholders (Durgapur–Asansol Belt)**
**Impact**
Major industries, including IISCO plants, ACC plants, and thermal power units, will benefit from improved rail connectivity and more reliable freight movement.
**Action Required**
Affected industries should monitor progress for potential improvements in logistics and supply chain efficiency via the Sini–Purulia–Asansol corridor.
**Indian Railways (South Eastern Railway & Kolkata Metro)**
**Impact**
The departments will see a reduction in maintenance challenges and an increase in operational efficiency, safety, and the ability to meet rising passenger and freight demand.
**Action Required**
The relevant railway divisions must manage the execution of sanctioned projects, including the installation of new substations and the reconstruction of bridge substructures.
Key Entities Referenced
Ministry of Railways: The primary government body that sanctioned ₹895.30 crore for major infrastructure, power system upgradation, and capacity augmentation projects.
Kolkata Metro Railway: The entity for which a ₹671.72 crore power system augmentation was approved for the North–South Corridor to reduce train headway from 5 to 2.5 minutes.
Adra Bridge Project (Bridge No. 520): A ₹223.58 crore reconstruction project on the Madhukunda–Damodar section to strengthen a critical freight and coal corridor.
South Eastern Railway: The specific railway zone responsible for executing the Adra bridge reconstruction, yard remodelling, and track works.
Ministry of Railways
Indian Railways Approves ₹895.30 Crore Projects
for Power System Upgradation and Bridge
Infrastructure
₹671.72 Cr Kolkata Metro Upgrade with 7 New Traction
Substations and Power System Augmentation from 11KV to
33 KV for Higher Frequency & Capacity Expansion
Approvals to Pave Way for 2.5-Minute Metro Headway
Upgrade from Existing 5-Minute Operations, Boosting Line
Capacity to Meet Rising Passenger Demand
₹223.58 Cr Adra Bridge Project to Strengthen Critical Freight
Route and Industrial Connectivity
Posted On: 02 MAY 2026 4:34PM by PIB Delhi
Indian Railways has sanctioned key infrastructure and capacity augmentation projects worth ₹895.30
crore to strengthen railway bridge infrastructure and enhance metro rail power systems.
Kolkata Metro Power System Augmentation
In a major step towards enhancing metro rail capacity, works worth ₹671.72 crore have been sanctioned
for strengthening the North–South Corridor of Kolkata Metro Railway. This includes:
Provision of 07 new Traction Substations at a cost of ₹291.06 crore.
Augmentation and upgradation of Auxiliary Substation (ASS) & Traction Substation (TSS) systems
from KESP (Esplanade Metro) to KMUK (Kavi Subhash – New Garia) for the North–South
Corridor of Kolkata Metro Railway, along with augmentation of power supply at elevated sections
from KNTJ (Netaji Metro Station) to KKVS (Kavi Subhash Metro Station), including enhancement
from existing 11 KV system to 33 KV system, at a cost of ₹380.66 crore.
The Kolkata Metro system, built in the 1980s, was originally designed to support train operations at a
frequency of about 5 minutes. With rising passenger demand, the requirement for higher frequency
operations has increased. With the sanctioning of this project, Kolkata Metro will be enabled to operate
at a 2.5-minute headway, significantly enhancing line capacity and service frequency.
The existing substations and equipment are reaching capacity limits and face maintenance challenges
due to non-availability of spare parts. The approved upgradation will ensure reliable power supply,
support higher train frequency, and improve overall passenger service.
Bridge Infrastructure Strengthening in Adra DivisionA project costing ₹223.58 crore has been approved for the construction of Bridge No. 520 UP & 520 DN
(substructure) between MDKD–DMA (Madhukunda–Damodar) section, along with associated yard
remodelling and track works in bridge approaches under South Eastern Railway.
The existing Damodar Bridge (Bridge No. 520), constructed in 1965 (UP line) and 1903 (DN line), has
aged significantly and shows signs of structural distress, necessitating reconstruction of foundation and
substructure.
This section is a key railway link between Asansol and Tatanagar, forming part of an important DFC
feeder route and coal corridor (Sini–Purulia–Asansol), and carries a high traffic density of 67 GMT. The
project will enhance safety, reliability, and operational efficiency.
The redevelopment is also expected to provide a boost to major industries in the Durgapur–Asansol belt,
including IISCO plant, ACC plant and thermal power units, by improving rail connectivity.
Towards Modern, Safe and High-Capacity Rail Systems
These projects represent a significant step towards modernisation, safety enhancement, and capacity
expansion across Indian Railways. While the bridge project will strengthen critical freight and industrial
connectivity, the metro power upgrades will enable higher frequency, improved reliability, and better
commuter experience in Kolkata.
Indian Railways continues to invest in robust infrastructure to meet growing transportation demands
while ensuring safe, efficient, and future-ready rail operations.
***
Dharmendra Tewari/ Dr. Nayan Solanki/ Ritu Raj
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