The Irijae Eco Bridge project in South Korea was developed to restore an ecological corridor disrupted by a road development on Irijae Hill. Eco-bridges help restore wildlife corridors while maintaining safe and efficient transport networks.
For this project, the Geoquest business unit of Freyssinet Korea supplied its TechSpan precast concrete arch solution. A customized funicular shape was adopted for the TechSpan arches to optimize material usage and reduce associated CO₂ emissions. The arches were installed on cast-in-place footings. In total, 27 precast arches were installed, while shear connectors were incorporated to accommodate the site’s 9% longitudinal gradient.
TechSpan is a three-hinged precast concrete arch solution, typically consisting of half-arch units meeting at the crown and supported by precast or cast-in-place footings. The system enables fast and predictable installation while requiring only a narrow construction footprint and minimal equipment.
This project was completed in March 2026.
Congratulations to everyone involved in the successful delivery of this project.
To learn more about TechSpan and explore preliminary design solutions for your infrastructure projects, visit Geoquest Design.
