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Indian Railways has initiated renovation work on the historic Koilwar Bridge over the Sone river in Bhojpur district, Bihar. The structure, which links Arrah and Patna and carries both rail and road traffic, is being upgraded under the Danapur division of the East Central Railway. Built in 1862 during the British era, the bridge has served as a critical transport corridor for over a century. The ongoing project aims to strengthen its ageing superstructure, replace worn components and ensure safe operations for both rail and road users.
Indian Railways has begun renovation work on the iconic Koilwar Bridge, a dual rail–road structure spanning the Sone river in Bhojpur district, Bihar, under the Danapur division of the East Central Railway. The project, launched in the past week, is aimed at strengthening the ageing bridge and improving safety and operational efficiency along one of the region’s most important transport links connecting Arrah and Patna.
The Koilwar Bridge, officially known as the Abdul Bari Bridge, was commissioned in 1862 and remains one of India’s oldest operational railway bridges. Designed during the British era, it was constructed under the supervision of engineer George Turnbull and became a landmark of 19th-century railway engineering. Over the decades, the bridge has continued to serve as a key artery for both rail traffic on the Grand Chord route and road connectivity between central and eastern Bihar.
According to railway sources, the renovation exercise is focused on structural strengthening of the existing framework, including replacement of ageing iron components with modern high-strength steel elements. The work is also intended to improve the bridge’s resilience to increasing traffic load and to support smoother movement of trains on the busy corridor. Maintenance teams have been deployed to carry out round-the-clock inspections alongside the repair activity to ensure uninterrupted monitoring of structural stability.
Officials have indicated that the bridge’s original design, though historically significant, has undergone considerable stress due to continuous usage over more than 160 years. The current intervention is therefore aimed at extending its service life while retaining its functional importance within the rail network. Safety enhancements are also being prioritised for both rail and road users who continue to rely on the structure for daily connectivity across the Sone river.
The Koilwar Bridge holds strategic importance as it forms a critical link on the route connecting Patna with Arrah and further towards western Bihar. It has historically been one of the busiest crossing points over the Sone, and continues to play a central role in freight and passenger movement across the region. Railway engineers are using historical construction records alongside modern engineering assessments to guide the restoration process and ensure precision in repair works.
The renovation comes at a time when Indian Railways is simultaneously modernising several ageing bridges across its network, particularly those built during the colonial period. While authorities have not indicated any long-term disruption to traffic, the phased nature of the work suggests that cautionary measures may be applied as required to maintain operational safety.
Once completed, the renovation is expected to reinforce the structural integrity of the Koilwar Bridge and support its continued role as a vital transport link in Bihar’s railway and road infrastructure network.
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