GPT Infraprojects Limited, together with its subsidiaries, carries out civil and infrastructure projects in India and internationally. The company operates through Infrastructure and Concrete Sleepers segments. It engages in construction and maintenance of railways bridges, steel superstructures, structured steel fabrication, large-span steel superstructure, road construction, and railway tracks installation. The company is also involved in turnkey construction riverine bridges, deep-pile, pile foundations, heavy duty concrete pavements for airports, metro, and light rail systems; and railway sidings, merry-go-round railways, and roads. In addition, it manufactures and sells concrete sleepers for mainline, curves, bridges, level crossings, points, and crossing. GPT Infraprojects Limited was incorporated in 1980 and is headquartered in Kolkata, India.