A ground stabilization grid which includes a series of polygonal shaped cells having “x” sides. The cells are formed by polymer walls having a wall height of between about 1″ and about 6″. Each cell shares a common wall section with at least two adjacent cells; and a majority of cells within the grid includes at least two reinforcing ribs extending across the cell to engage opposing walls of the cell. The reinforcing ribs are characterized by (i) engaging the cell walls between about 25% and about 75% of the wall height, and (ii) extending between different opposing walls of the cell.