The Johor Bahru–Singapore Rapid Transit System (RTS) is a cross-border project that will connect Johor Bahru in Malaysia with Woodlands, Singapore. Featuring stations in both countries, each featuring customs, immigration, and quarantine facilities, the RTS will ease traffic congestion by reducing the number of cars using the Johor-Singapore Causeway, providing greener transportation for around 10,000 passengers per hour. AECOM is delivering the project and faced several challenges on the rail project spanning two countries. To facilitate collaborative workflows and establish optimal project delivery, AECOM wanted to adopt a digital twins approach.Leveraging Bentley’s integrated digital modeling and analysis applications, AECOM established a connected data environment through ProjectWise to optimize planning, design, and construction. They developed a reality mesh from drone-captured images, accelerating survey and processing fivefold. Applying Bentley software automated workflows, ensured structural integrity, and saved 50% in drafting time. The digital twin solution provided an accurate, holistic view of the cross-border rail project, meeting technical requirements for both countries while reducing rework.