A rail transport system includes a rail assembly having at least two rail modules; at least one angled tongue element disposed at an end of the at least two rail modules; at least one angled groove element disposed at an end of the other one of the at least two rail modules, the at least one angled groove element for receiving the at least one angled tongue element when the at least two rail modules are assembled together; and at least one transport device for running along the rail assembly and transporting articles from one location to another. The rail transport system may further include first and second chain-wrench assemblies for securing the at least two rail modules to one another.