PT Hutama Karya is constructing the 50.14 km Mamberamo–Elelim Section of the Trans Papua Road (with an investment value of USD 209 million), creating a critical lifeline through the region’s remote, mountainous highlands. To conquer the extreme terrain, 75m deep excavations, and scarce geotechnical data, the team adopted a comprehensive digital strategy integrating Bentley solutions. The process began with LiDAR and ContextCapture for precise 3D terrain models, followed by Leapfrog, which generated detailed 3D geological models. These models were then input into GeoStudio and PLAXIS 2D to analyze slope stability and deep-cut reinforcement strategies. This digital approach yielded significant returns: it mitigated failure risks valued at USD 2.5 million, optimized costs by USD 1 Million, and saved 640 engineering work hours. Furthermore, the project was accelerated by two months, and it reduced CO2 emissions by 49,672 kg. Most importantly, the road dramatically cuts travel time from 6 hours to 1 hour 20 minutes, providing safe, reliable access for over 1.45 million people, fostering Healthy Cities & Communities and enhancing regional development.