This paper assesses developed models for prediction and evaluation of the effect of plastic limit for design of roads in the study area. The study was conducted to develop models that will be a specification or parameters in road design and construction in the study location. Samples from different locations were collected and were subjected to laboratory analysis. Nine samples out of numerous locations were analyzed and applied to develop predictive models equations, and the theoretical values generated from the model equations were compared with other measured values from the study location. The predictive models for the study location compared favorably well with the measured values. These values are between medium and high plasticity of soils. The predictive model can be applied as established parameter that can be integrated in the construction and design of roads. Hence sub base predictive models will be effective in maintaining the life span of the road if it is integrated in design. This paper is imperative because there exist a lot of variations in the plastic limit of soils in the study area.
