Abstract: A Portable Cattle Guard is provided which includes an assembled rectangularly shaped base member. Contained within the confines of the base member are a pair of inclined spring biased cattle ramps moveably connected along their longitudinal axis to provide a slight apex when in the relaxed state. The base member includes a pair of hollow vertical posts having inwardly facing guide slots cut therein. Each hollow post contains a coiled spring fixed at its upper end to the upper section of the post. The other end of the spring is connected to an end section of a leading bar of one of the ramps which is sufficiently extended to enter each of the guide slots. When a vehicle is driven on the spring-biased ramp, the ramp is flattened so that it is substantially parallel with the ground surface. When the vehicle passes over the ramp, the extended spring returns the ramp to its normal relaxed apex forming position.