a platform configured to be mounted on a chassis of a vehicle for supporting a cargo container, the platform comprising a base portion and a bridge member, the bridge member located at an end of the base portion and extendable relative to the base portion from a retracted position to an extended position to lengthen the platform, the bridge member in the extended position projecting beyond a first end of the chassis above a coupler mounted to the chassis and configured to releasably connect the vehicle to a second vehicle, the bridge member configured to extend into a gap between the vehicle and the second vehicle, the bridge member configured to move relative to the base portion towards the second vehicle for establishing a bridge across at least a portion of the gap between the vehicle and the second vehicle while supporting a first portion of the cargo container to transload the cargo container from the platform to the second vehicle, and wherein the base portion is configured to support a second portion of the cargo container while the bridge member moves toward the second vehicle and away from the base portion.