<p>Loess deposits present considerable geotechnical challenges due to their high susceptibility to erosion and collapsibility. Reinforcement, compaction, and inundation are commonly employed to improve such soils. However, these methods are not entirely practical when applied individually and are associated with several limitations, including restricted depth of influence, time-consuming processes, and spatial constraints. These drawbacks underscore the need for integrated approaches to achieve optimal soil stabilization and enhancement. The installation and application of helical piles, combined with other improvement techniques, are effectively applied to address these issues. This study utilized helical conical piles to enhance the loess soil in Dashli Borun, Golestan Province, northeastern Iran. The approach harnessed the compressive force generated at the base of the helical piles during installation to induce compressive stresses beneath the helices, thereby disrupting the soil structure. The investigation was conducted under two conditions: dry and saturated. Following pile installation, the ultimate load was assessed through static load tests. After installing 16 helical conical piles with helix diameters of 200 mm, 250 mm, and 300 mm at a depth of 6 m and with two types of conical helical piles in helix spacing to diameter ratio (S/D) of 1.5 and 3, tests were conducted under dry and saturated conditions with optimal water injection pressure of 4 bar. The results indicate that piles with closer helix spacing demonstrated the best performance under displacements equivalent to 5% and 10% of the average helix diameter at installation stress of 450 kPa. Furthermore, water injection reduced the bearing load compared to dry conditions but enhanced the stability of loess soils.</p>