The Arak–Malayer–Kermanshah railway project, spanning 321 km, establishes a vital rail connection between Iran’s western provincesand Tehran, integrating these regions into the national railway network. This connection is expected to drive economic, social, and culturaldevelopment across a significant portion of western Iran, while also reducing cargo transportation costs and enhancing passenger safetyand comfort.Moreover, the completion of the Railway will facilitate international rail communication between Iran and Iraq via the Khosravi bordercrossing.Iran Oston Consulting Engineers is responsibility for supervising the pavement works along the entire route.