Adaptive Risk Management in Road Construction: Oyon-Ambo Highway Insights, El Niño 2019 Case Study

This research provides an in-depth analysis of the challenges faced during the construction of the Oyon-Ambo highway in Peru, particularly during the extreme rainfall events associated with the 2019 El Niño phenomenon. Situated in the high Andean area of the Pasco region, this rigid pavement road project encountered significant disruptions due to the extraordinary weather conditions. The adjacent Chaupihuaranga River experienced increased flow rates, causing extensive damage to the road and necessitating substantial modifications to the engineering plans. Focusing on 14 critical sectors identified in the project's technical file as prone to instability, the study details the accelerated degradation and eventual destruction of these sectors due to the intense rainfall. Emphasizing the importance of adaptive risk management in road construction, especially in regions susceptible to natural phenomena like El Niño, the paper underscores the need for responsive reengineering approaches based on specific damage types. It also highlights the critical role of continuous monitoring and evaluation in adapting to environmental changes. The insights from the Oyon-Ambo highway case offer valuable lessons for future road construction projects, underscoring the importance of proactive and adaptive risk management strategies to minimize the impacts of extraordinary natural events.