Track laying starts on Mumbai-Ahmedabad HSR Corridor

04 Sep 2023 CW Team

Construction has commenced on the first reinforced concrete (RC) track bed for the Mumbai-Ahmedabad high-speed rail corridor, utilizing the Japanese Shinkansen-inspired J-slab ballastless track system. This marks the first time utilisation of this track system in India.

The J-slab system consists of pre-cast track slabs on which fastening devices and rails are mounted. These slabs are supported by the RC track bed, with an approximate thickness of 300mm, constructed in situ for individual up and down track lines on the viaduct top. The RC track bed measures 2420mm in width.

RC anchors are integrated to prevent any longitudinal and lateral restraint to the track slab. These RC anchors, with a diameter of 520mm and a height of 260mm, are spaced at approximately 5-meter intervals. They facilitate achieving the desired alignment, both horizontally and vertically, suitable for train operations at speeds of up to 320kmph.

Contracts for track works in the entire Gujarat portion of the corridor have been awarded, with material procurement at an advanced stage. Over 14,000 MT of JIS rails and 50 molds for casting track slabs have been received from Japan. Dedicated factories have been established to manufacture the track slabs, equipped with state-of-the-art technology and infrastructure for precise slab production.

Specialized construction machinery, including rail feeder cars, slab laying cars, and CAM (Cement Asphalt Mortar) laying cars, will be employed for track works. To ensure proper execution, extensive training and certification for Indian contractor personnel are being organized in collaboration with Japan Railway Technical Services (JARTS) as the Training and Certification agency.

Infrastructure Urban

06 Jul 2026

ABS Marine Sees CRISIL Credit Rating Upgrade

ABS Marine Services has secured an upgrade to its long term and short term credit ratings from CRISIL, reflecting improved profitability and revenue growth through long term contracts. CRISIL moved the long term rating from BBB+/Stable to A-/Stable and revised the short term rating from A2 to A2+. The action signals strengthened financial metrics and operational resilience. The company benefited from durable client relationships with firms such as ONGC and Schlumberger. The rating decision followed stronger cash flows and an enlarged bank loan facility, which increased from Rs 3,705 million (m..

Project BRAHMANK Marks 16 Years Of Strategic Roads In Arunachal

Project BRAHMANK is marking 16 years of work to establish strategic road and bridge links across Arunachal Pradesh, maintaining and developing 811 kilometres of roads and nearly 86 bridges that range from small culverts to large steel and arch bridges. These transport links are described as critical for ensuring year-round movement of defence personnel, equipment and essential supplies while improving everyday travel for people in remote villages. The project balances national security requirements with regional development by focusing on reliable access in challenging terrain. Notable enginee..

Longleng CSOs Give One Week Ultimatum Over Two-Lane Highway

Civil society organisations (CSOs) in Longleng district have demanded immediate restoration of the deteriorating Changtongya–Longleng two-lane road and sought a detailed status report on the stalled construction within one week. The demand followed a consultative meeting convened under the Phom Peoples' Council (PPC) to discuss welfare and development concerns. PPC president YB Angam Phom said prolonged non-maintenance had caused hardship to commuters and affected transportation, local commerce and the district's development. The meeting urged authorities to undertake immediate restoration a..