World’s Largest Bridge Constructed Without Steel Reinforcement

The Harkers Island Bridge in North Carolina stands as a landmark achievement in sustainable infrastructure, holding the title of the world’s largest bridge constructed without steel reinforcement. 

This impressive structure spans 3.2 miles (5.15 km) across 28 spans, showcasing the potential of advanced materials in modern bridge design.

The bridge incorporates an extraordinary 1,574,618 linear feet (480 km) of GFRP (Glass Fiber Reinforced Polymer) reinforcement, utilizing Mateenbar™ in various sizes (#4, #5, #6, and #8). This extensive use of GFRP reinforcement marks a significant departure from traditional steel-reinforced concrete construction.

Mateenbar™ was specifically chosen for this project to address the persistent challenges of corrosion in marine environments. By opting for GFRP reinforcement, the bridge designers aimed to create a more durable and corrosion-resistant structure. This decision is expected to significantly extend the bridge’s lifespan and reduce long-term maintenance costs, particularly given its exposure to saltwater and harsh coastal conditions.

The Harkers Island Bridge serves as a testament to the viability of GFRP reinforcement in large-scale infrastructure projects, potentially setting a new standard for bridge construction in corrosive environments.