Securely interconnectable modules for use in constructing a pathway for traffic

A modular structure for use in constructing a pathway for traffic, said modular structure comprising:

• a first module and a second module, with each module comprising:
• a base member having a first end, a second end, a first side and a second side, a perimeter edge and a top surface;
• wherein said base member defines a lateral groove disposed at said perimeter edge and extending along said first end, and a tongue structure disposed at said perimeter edge and extending along said second end;
• wherein said tongue structure of said first module is shaped and dimensioned to be received in said lateral groove of said second module;
• wherein said tongue structure comprises a plurality of tongue portions, and including a first type of tongue portion and a second type of tongue portion disposed in alternating relation generally along the length of said tongue structure, to thereby define a throughpassage for receiving a securing rod therethrough;
• wherein, to form a pathway for traffic, said modules are placed in perimeter-edge to perimeter-edge relation one to the next, with the tongue structure of said modules inserted into said lateral groove of an adjacent module, and are secured together by end walls and said securing rod.