Dharamshala, Feb. 22 -- Himachal Pradesh government has formulated a comprehensive "Road Drainage Policy" aimed at creating a resilient and sustainable road infrastructure. The spokesperson of the state government on Saturday said that the policy has been conceived to address the recurring damage inflicted on the roads by intense monsoon rains. Field observations and post-monsoon assessments have consistently demonstrated that inadequate drainage provisions are the primary cause of repeated road deterioration. Traditionally, drainage provisions along PWD roads have been developed based on conventional patterns, field constraints, and incremental additions rather than scientific hydraulic or terrain-based design principles. Recognising this critical gap, the new drainage policy introduces a transformative shift by placing hydrology-based design at its core. Drainage structures will now be designed using scientific hydrological data, including actual rainfall intensity and catchment characteristics, instead of relying on standardized templates alone. This data-driven approach aims to reduce annual monsoon-related damage, improve network resilience and enhance public safety and serviceability. In 2023 and 2025 alone, the state incurred estimated losses of nearly Rs.2,400 crore and Rs.3,000 crore, respectively, due to extensive road damage....