InsulFoam GF geofoam is a lightweight, geo-synthetic expanded polystyrene (EPS) designed as an alternative fill material in a variety of applications, including bridge approaches. With a weight that is nearly 100 times lighter than soil, InsulFoam GF is easy to handle and provides significant cost savings by often eliminating the surcharging, preloading and staging required for many bridge construction projects. With an enhanced R-value, InsulFoam GF provides long-term performance and environmental sustainability.