Abstract: Continuously reinforced concrete pavement is treated as orthotropic plate on viscoelastic foundation. Dynamic responses of the pavement under transient load are studied using triangular series and integral transformation. Analytic solutions for displacements, internal forces and stresses are obtained. Numerical results are given and compared with the responses of pavement under static and transient load on non-viscosity foundation. The effects of transient load period and foundation viscosity on the responses are discussed.