The disclosure provides a bimodal container chassis of differing lengths in a gooseneck type as well as a flat beam type for supporting ISO and domestic containers and other cargo during highway as well as railway transit. The bimodal container chassis has a front end equipped with a king-pin for connecting to a tractor and a rear end equipped with braking and suspension components, axles, wheelsand tires, which make the bimodal container chassis suitable for road transport. The bimodal container chassis has front and rear ends for connecting, and thereby suspending, the bimodal container chassis including but not limited to its payload between two rail bogies, which make the bimodal container chassis suitable for rail transit. The bimodal container chassis is constructed of sufficient strength and stiffness to withstand in-train forces of 400,000 pounds tension and compression, yet the bimodal container chassis is constructed of reasonable weight for being competitive and complying with bridge laws as well as other highway regulations.