Tunneling and transportation infrastructure projects are among the most complex and demanding in the construction industry. These projects require precise coordination, advanced technology, and unwavering reliability to ensure smooth and safe operations. Smith and Long offers a complete range of services tailored to the unique needs of tunneling and transportation infrastructure, from TBM (Tunnel Boring Machine) assembly and commissioning to site power design and controls integration. With our extensive experience and global support capabilities, we are your trusted partner in bringing these critical projects to successful completion.









