This article substantiates the relevance of designing foundations for 35 kV overhead line anchor-angle supports for the challenging engineering and geological conditions of Karelia. Based on load analysis and a comparison of foundation types, their operational and technological characteristics are identified. A technical and economic assessment confirmed the superiority of pile solutions. The conclusion is differentiated: pile foundations are recommended for soft, waterlogged soils, while precast reinforced concrete foundations are suitable for strong foundations with developed infrastructure. The results are applicable to regions with similar conditions.

Keywords: 35 kV overhead power lines, anchor-angle support, transmission line support foundations, mushroom-shaped foundation, pile foundation, engineering and geological conditions of Karelia, water-saturated soils, frost heaving of soils, load calculation