The concentrations of selected heavy metals, including Cd, Pb, Zn, Cr, Fe, Mg, Mn, Co, Ni and Cu, were investigated in roadside soils along the Mubi-Yola Highway in Adamawa State, Nigeria. Surface soil samples were collected from five towns: Mubi, Hong, Gombi, Song and Girei. Samples were obtained at a distance of 20 meters from the roadside using a soil auger and were digested with HNO₃ and HCl prior to analysis by Atomic Absorption Spectrophotometry (AAS). The results confirmed the presence of all investigated heavy metals in the studied soil samples, with concentrations occurring in the order: Fe>Mn>Zn>Mg>Pb>Co>Ni>Cu>Cd>Cr Pollution index analysis indicated relatively high contamination levels for Pb, Fe, Mn, Ni and Co across most sampling sites, although Pb contamination at Hong and Gombi was classified as moderate, likely due to anthropogenic activities. In contrast, Cd, Zn, Cr, Mg and Cu showed pollution index values below 1 (PI<1), indicating that the sites were considered unpolluted with respect to these metals. The degree of contamination (CD) values exceeded 20 at all locations, indicating very high contamination levels. Furthermore, pollution load index (PLI) values greater than 1 demonstrated deterioration of soil quality at all study sites, following the order: Girei>Mubi>Song>Gombi>Hong The enrichment factor (EF) values suggested that most elements ranged from deficient to minimally enriched. In addition, the geo-accumulation index (Igeo) revealed contamination by Pb, Fe, Mn, Co and Ni, whereas Cd, Zn, Cr, Mg and Cu were classified as uncontaminated because their Igeo values were below zero. Overall, the findings indicate that the studied roadside soils were contaminated by several heavy metals, primarily as a result of human and traffic-related activities.