Braced synthetic mattress system for erosion control

A method of constructing an internally braced synthetic mattress comprising the steps of:

• (a) laying out a first portion of a geosynthetic material,
• (b) folding at least a portion of the first portion of geosynthetic material at a fold line to form an upright side, thereby forming a geosynthetic material structure having a bottom side and the upright side,
• (c) installing at least one angle brace, wherein the installing comprising weaving at least one horizontal bar into the first portion of the geosynthetic material, connected a first end of an upright bar to a first end of the at least one horizontal bar, and connecting a diagonal bar to each of the horizontal bar and upright bar such that each end of the diagonal bar connects with a respective second end of the horizontal bar and upright bar,
• (d) filling the geosynthetic material structure with a filler, and
• (e) securing a second portion of a geosynthetic material having a size and shape approximately equal to that of the bottom side over the filler and to the upright side of the geosynthetic material structure to form the mattress.