All United Kingdom rail passengers using the West Coast Main Line from England into Scotland travel through the Carstairs railway station in southern Scotland, which is located close to the key rail junction that divides northbound trains between Glasgow and Edinburgh. To improve passenger service and accommodate high-speed, low-emission electric trains, Arcadis was hired as part of an alliance with Network Rail and Babcock, known as Rail Systems Alliance in Scotland (RSAS), to design an updated electrification system. They discovered the new design elements were difficult to integrate into their previous modeling applications.Arcadis determined they could unify all design work with Bentley’s open and integrated applications. Using the Bentley iTwin platform, they created a digital twin of the project that enabled improved communication between RSAS members, as well as early detection and resolution of clashes in the design. Keeping project information up to date in ProjectWise enabled web-based interdisciplinary project reviews. Arcadis met all client requirements and optimized the design while reducing the modeling time by 35%.