Kurt Kemmling's definitions
a pile of rocks and/or debris, placed upstream in front of bridge abutments in rivers and streams, used to prevent the erosion of the bridge foundation. Also used to prevent river banks from eroding.
We need to place some riprap in front of these new bridge pilings we just poured, so they won't erode.
by Kurt Kemmling August 16, 2004
Get the riprap mug.