Bio-engineering work has been carried out on the Mugu section between Darke and Chankheli in an area of around 3500 square metres where full widening of the section has been completed. Similarly, bio-engineering work on the Humla section is ongoing in an area of around 3000 square metres. Bio-engineering works are required for the protection and stabilization of slopes. The plants provide the functions of catching debris, armouring the surface, reinforcing the soil, anchoring the surface layer, supporting the slope, and supporting successful drainage. Similarly, they also enhance the aesthetics of green roads. Bio-engineering techniques like brush layering using branches of local plant species, have been adopted. Also, in order to stabilize fresh soil cut-and-fill slopes, salimo grass was planted. Soil bioengineering techniques are extensively used due to their cost-effectiveness, using locally available materials and labour. The purpose of bio engineering work is to improve slope stability and prevent the erosion of cut and fill slopes along the MHLR alignment.