Incorporated in 2011, Mumbai-based A B Infrabuild Limited specializes in providing Road Over Bridge (ROB) and Foot Over Bridge (FOB) services, along with new station infrastructure, civil and structural works, track formation, track linking, gauge conversion, and construction of new railway lines. The company is also involved in road contracts, infrastructure projects, and steel girder bridges. As an AA-grade contractor, it works with PWD Maharashtra and the Municipal Corporation of Greater Mumbai and operates a ready-mix concrete plant. Promoted by Shri Amit Bholanath Mishra, who has over 20 years of experience, the company serves major clients including GCC Hotel Private Ltd, Sky Way Infrastructure Private Limited, Krypton Corp, Dev Engineers, Dedicated Freight Corridor Corporation of India Ltd., Central Railway, Mumbai Metropolitan Region Development Authority, Western Railway, and Mumbai Railway Vikas Corporation Ltd., with approximately 52% of its order book coming from Western Railway.