The main road inside the Aarey Milk Colony that often becomes nearly impassable due to potholes in monsoon will turn into a concrete thoroughfare. The busy road starts from Western Express Highway and runs through the lush green patch till Morarji Nagar, Powai.  The 7.2-km stretch of the road within Aarey will be concretised over three years, while the project will cost Rs 51.6 crore, said officials. The road is used by hundreds of vehicles daily as a traffic shortcut between the city’s eastern and western sides. It is maintained by the BMC.