Shielding design for two new laser electron photon beamlines using backward Compton scattering with the photon energy of up to 76 MeV at NewSUBARU and 2.9 GeV at SPring-8 have been performed by using the Monte Carlo code FLUKA with a modified user source code including the beam dumps which have double-layer and triple-layer structures, respectively. The leakage dose distributions depending on the various conditions of photon beam transport lines and local shields were simulated to estimate the effect of the shield components to transport high energy photons at long beamlines.