Dock plank assembly

A dock plank assembly comprising:

• a first elongated polymer plastic plank having a first support end, a second support end, and a top surface for walking on, said first plank having an integral longitudinal web therein for providing rigidity and support to said first plank with said web of said first plank having an opening therein,
• a second elongated polymer plastic plank having a first support end, a second support end for supporting said second plank, said second plank having a top surface for walking on, said second plank having integral longitudinal web therein for providing rigidity and support to said second plank with said web of said second plank having an opening therein;
• a metal free-span rib, said metal rib spaced from said support ends of said first plank and said second plank with said metal rib extending transversely through said opening in said web of said first plank and said opening in said web of said second plank to provide rigidity and additional individual support for each of said planks and for providing support for said first plank and said second plank as a unit to thereby maintain said first plank and said second plank in surface walking condition with respect to one another;
• a first pin secured to said free-span rib for engagement with said first plank;
• and
• a second pin secured to said free-span rib to said second plank to hold said first plank and said second plank proximate one another.