A B Infrabuild Limited is an India-based infrastructure company. It provides various services, such as civil and structural work, new station infrastructure, redevelopment of old stations, new railway lines, gauge conversion, track linking, track formation, building of rail over bridges, foot over bridge and other. It develops infrastructure and has completed construction of road over bridge at various stations on the central railway and the western railway, construction of foot over bridges, skywalks and elevated booking of offices at many railway stations for the Mumbai Railway Vikas Corporation Ltd, construction of new platforms for the western railway, construction of new station buildings for the western railway and have also done repairs to the approach roads for the western railway. It also reconstructs roads / widening and construction of pedestrian cum vehicular subways for the municipal corporation of Greater Mumbai and the Mumbai Metropolitan Region Development Authority.