Roads were built with a crown to allow drainage

The Roman Road Network allowed the Romans to march their army to any location in 10 days.

They were expertly engineered.

Roman builders used whatever materials were at hand to construct their roads. The bottom section of the road was usually made with small stones. This was followed by foundation layers of crushed rocks. Finally, the surface layer was constructed using neatly arranged blocks. Roads were built with a crown and adjacent ditches to ensure easy water drainage.