Test road constructed with bio-asphalt between Siddeburen and Wagenborgen
nfrastructure company Roelofs from Den Ham (Overijssel) started on 2 June with the construction of a test road made of bio-asphalt made with Dutch lignin. It is the first time in the world that a lignin-based road is being built. The fully vegetable lignin is used as a replacement for bitumen in asphalt, which is extracted from crude oil.