A system for supporting and transporting a drilling rig. The system may have a pair of rails, wherein each rail has a plurality of rail segments and a plurality of connections between the segments. Moreover, each connection may have a plurality of interlocking lugs secured with a shear pin and opposing abutment faces, such that each connection may be configured to transfer moment and shear forces between adjacent rail segments. In some embodiments, the each rail segment may be configured to support a point load of up to 1000 kips. In some embodiments, each rail segment may have a protruding connector and a receiving connector, and each connection may include the protruding connector of a first segment and the receiving connector of a second segment. In some embodiments, a portion of each connection may be configured for tension loading and another portion may be configured for compression loading.