HDPE pipe sometimes should have bridge to cross the river. We make design according to site condition. The bridge will support HDPE pipe and the bridge should had minimal cost for construction and maintenance. Contact us for detail: AhmadRudy, Phones: 062 21 945 72 102, 062 857 115 333 84 Faxs: 062 21 849 98 927 Medan Satria, Bekasi Barat 17132 Jawa Barat, Indonesia Email: ahmadrudy@hotmail.com