PURPOSE: A river structure protection facility is provided to prevent a river structure from scouring or trimming by water currents and floating matters. CONSTITUTION: A river structure protection facility(10) comprises a perforated steel plate(20), a water quality contamination prevention layer(30), a carbon mat(40), a carbon mat covering layer(50), a surface thickness maintenance layer(60), and a finishing resin coating layer(70). The water quality contamination prevention layer is formed on the inner surface of the perforated steel plate. The carbon mat is attached on the outer surface of the perforated steel plate. The carbon mat covering layer is formed on the outer surface of the carbon mat. The surface thickness maintenance layer is formed on the outer surface of the carbon mat covering layer. The finishing resin coating layer is formed on the outer surface of the surface thickness maintenance layer.
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