How did Trajan expand Roman roads and transportation networks?

Trajan significantly expanded and improved the Roman transportation network by undertaking extensive public works throughout the empire, including Italy, the provinces, and Rome itself. His efforts focused on the construction of roads, bridges, and harbours to facilitate better movement and administration.12

A notable example of his infrastructure development was the construction of the Via Nova Traiana. Built along an ancient caravan trail, this road linked the city of Bostra—the capital of the newly annexed province of Arabia—with the Red Sea.3

These projects were part of a broader commitment to infrastructure that also included the construction of aqueducts and the reclamation of wastelands, with impressive examples of his work still surviving in Spain, North Africa, the Balkans, and Italy. By enhancing these networks, Trajan helped maintain the efficiency and connectivity of the Roman Empire during his reign.12