Tunnel Reinforcement CHALLENGE: Corrosion of tunnel walls required new steel liner plates. Underground access was limited to only one side. SOLUTION: BoxBolt® was selected for their unique advantage: Dependable steel-to-steel reinforcement for one-side-only installations Success Factors: - A customized , extra long BoxBolt® was engineered to meet challenging wall density requirements - 61,000 BoxBolts® were installed to secure the tunnel structure Gallery The Original Boxbolt® Blind bolt fasteners for faster, easier, blind structural connections suited for every environment and application. See Product Page Execution BoxBolt Structural Anchors Application Methods See All BoxBolt Structural Anchors Applications See All BoxBolt Structural Anchors Applications More Case Studies Blue Origin Rocket Launch Pad,Cape Canaveral, FL Blue Origin is a space company focused on perfecting reusable space travel vehicles to expand humanity to the final frontier. View Case Study Lehman College, Bronx, NY Lehman College and the Engineers at SGH Consulting looked to LNA Solutions to design a Custom BeamClamp Assembly View Case Study San Francisco Bay Area Rapid Transit BART Monorail Upgrades View Case Study See All Case Studies