CORPUS CHRISTI, TX — DYWIDAG, a structural and geotechnical engineering solutions company, is marking the one year anniversary of the U.S. 181 Harbor Bridge opening to traffic in Corpus Christi, Texas. Otherwise known as the Corpus Christi Harbor Bridge, the structure was designed to enhance commuter safety and expand navigational access for one of the busiest ports in the United States.

Led by the Texas Department of Transportation and FlatironDragados USA, the project replaced the original 1950s-era Harbor Bridge with a modern stay cable structure spanning 1,661 feet, with a total length exceeding 3,295 feet, making it North America’s longest concrete segmental cable-stayed bridge. Designed for a 170-year service life, the bridge sets a new benchmark for durability, resilience, and long-term performance.

For the project, DYWIDAG delivered 152 Dyna-Grip DG-E series stay cable systems engineered for high fatigue resistance and long-term durability, along with tie-down cables and purpose-built installation equipment, all fully compliant with Buy America requirements. Working in close coordination with the main contractor, DYWIDAG’s team provided technical expertise and adaptive execution to support critical construction milestones. The scope of work also included the delivery of a magneto-flux-based force monitoring system for the stays.

In total, DYWIDAG supplied over 3,700 U.S. tons of 0.6-inch epoxy-coated strand, along with 24 tie-down cables and eight temporary stays to ensure structural stability throughout construction. Multiple system sizes were deployed to accommodate varying load demands across the span, supported by onsite technical supervision and workforce training integrated directly with contractor operations.

“The Corpus Christi Harbor Bridge is an iconic infrastructure project, one that demanded global expertise, precision, and collaboration in its construction phase and exceptional durability once opened,” said Roger Frenn, Mega Projects Department Lead at DYWIDAG. “Our ability to combine proven stay cable technology with onsite expertise and regulatory compliance was key to supporting this transformative project. The bridge is already improving traffic flow, enhancing safety, and support[ing] expanded harbor access and stands as a testament to DYWIDAG’s commitment to advancing critical infrastructure across North America.”