Presenting innovative ideas in Precast Concrete – the Precast Concrete Jersey Barrier and the Precast Concrete Central verge. These precast products provide unique methods to save precious road space that can be used for accommodating additional vehicles on the roads. Some of the other advantages of Precast Barriers and verges are: The installations time is almost negligible as compared to conventional medians. The median is uniform throughout its length as all pieces are made using uniform moulds. Virtually zero maintenance costs.