The dynamic modulus |E'I is one of the parameters for asphalt concrete stiffness that measure the strains and displacements of flexible pavement structure in loading or unloading condition. An asphalt concrete (AC) dynamic modulus IE" master curve is employed to characterise the modulus of asphalt concrete in terms of temperature and frequency rates. However, the standard laboratory test procedures for establishing asphalt concrete dynamic modulus IE" and the plotting the AC dynamic modulus E1 master curve are time consuming and require considerable resources. Artificial neural network (ANN) models were designed employing the FWD deflection-time history data generated by the finite element method (FEM) to determine the AC dynamic modulus El master curve (, and coefficients.