Boat Ramp Planks from Oldcastle Infrastructure are precast concrete slabs that are designed with a “V” groove top finish to improve traction and allow for self-cleaning. Boat ramp panels are available in 4′ lengths and widths up to 32′. The ramp panels are assembled with tongue and groove joint connections on top of prestressed sleeper rails with panels stops. The panels allow a complete boat ramp assembly to be delivered and installed typically on the same day.