Bicycle bridge made of bio-based composite materials
A relative new material consists of balsa wood, flax, resin and hardener
Bio-based bicycle bridge
The Fryslân provincial authority is building a bicycle bridge made of bio-based composite materials to complete the new ring road around the city of Leeuwarden. The bridge design was elaborated by the DRIVE construction team, consisting of Sweco/Witteveen+Bos, the provincial authority, the Reef Infra/Spie contracting group, and composites manufacturer Infra Composites.
Bio-based composites are relatively new in the infrastructure sector. The material used in this project consists of balsa wood, flax, resin and hardener. A study was performed in collaboration with a number of educational institutions to determine the optimal composition of the material. This resulted in a mixture that consists of 80% natural materials, with a service life of 50 years. The entire 66-metre-long roadway will be constructed out of bio-based composite, a world first at this scale. All partners involved gained new insights into bio-composites thanks to the materials study.