GPT Infraprojects Limited is engaged in construction activities for infrastructure projects. Its segments include Infrastructure and Concrete Sleeper. The Infrastructure segment consists of the execution of construction contracts and other infrastructure activities. The Concrete Sleepers segment consists of manufacturing concrete sleepers. It specializes in turnkey construction of railway bridges, riverine bridges on deep-pile or pile foundations, heavy-duty concrete pavements for airports and elevated metro and light rail systems. It is engaged in the construction of railway sidings, merry-go-round railways and roads, among others, for industrial layouts, turnkey rail and road infrastructure projects. Its concrete sleeper operations are spread across four countries, namely India, South Africa, Namibia, and Ghana. The Company, through its subsidiary, Alcon Builders and Engineers Private Limited, is engaged in Engineering, Procurement and Construction (EPC) segment.