Excavation in
Monthey

Michaud et Mariaux SA

Since 1990 · 1–10 empl.·4.9(14)

Michaud et Mariaux SA is a construction company working in civil engineering and building construction. Its activities include infrastructure works such as sewer installations, building construction and renovation, earthworks, and outdoor landscaping.

RITHNER SA

Since 1960 · 1–10 empl.·4.5(16)

RITHNER SA carries out civil engineering, earthworks, construction transport and demolition. Its other activities include crushing and recycling materials, creating and maintaining outdoor areas and urban spaces, and renting construction machinery.

RAYMOND RITHNER S.A.

Since 1980 · 1–10 empl.·4.5(16)

RAYMOND RITHNER S.A. was one of the companies that joined Routes et revêtements SA to form RITHNER SA. The resulting company carries out civil engineering, earthworks, transport, demolition and material recycling, and provides outdoor landscaping and construction machinery rental.

Routes et revêtements S.A.

Since 1964 · 1–10 empl.

Routes et revêtements S.A. joined Raymond Rithner SA to form RITHNER SA. The company works in civil engineering and road infrastructure, and also provides earthworks, transport, demolition, material crushing and recycling, outdoor development, and construction machinery rental.

PaysaBois Sàrl

Since 2025 · 1–10 empl.

Atra S.A., succursale de Monthey

Since 1999 · 1–10 empl.

Epiney Construction SA, succursale de Monthey

Since 2013 · 1–10 empl.

Ledian Sàrl

Since 2026 · 1–10 empl.