Ouvrage Fressinéa, also known as Fraisinéa or Frassinéa is a lesser work (petit ouvrage) of the Maginot Line's Alpine extension, the Alpine Line.

[1] It is associated with the gros ouvrage of Rimplas, the first Maginot fortification to be constructed anywhere.

Fressinéa was built between November 1930 and April 1934, accommodating 30 soldiers under a lieutenant with two months of provisions.

Construction was finished by Thorrand et Cie for 1.7 million francs.

[1][7] Fressinéa was held by the French Army until 1970 when it was sold to the commune of Rimplas.