ABSTRACT Damaged roads can cause inconvenience to road users. Damaged roads must be repaired or improved. Overlay calculations using back deflection data on the Parit Indah road in Pekanbaru City are carried out to complete road facilities and infrastructure. The road being tested is the Parit Indah road section with a width of 6 meters and a length of 2400m. For this research, Jalan Parit Inda…