Now, Rodrigo opened the software. The splash screen appeared—a familiar bridge silhouette against a stylized sun. Within seconds, the interface loaded faster than he remembered. He imported the raw total station data: 14,632 terrain points. On his old machine, this would have taken four minutes. CivilCAD 2016 chewed through it in 22 seconds.

Rodrigo’s only lifeline was CivilCAD 2016—64-bit version.

Six months later, the Cacuaco drainage channel passed its first rainy season test without a single flood report. At the project inauguration, a junior engineer asked Rodrigo what software he had used.

Rodrigo took a sip of coffee. “Not one.”