Abstract: A modular construction member for the construction of decking, flooring, roofing, and the like, including a matable connector formed integrally with the construction member for connecting successive deck members to form a deck assembly. The modular construction member includes a gutter portion and a groove portion, which may be inter-connected to provide a substantially water-proof structure. A separate fastener may be passed through the gutter portion, the groove portion, and into a subfloor to further secure the structure and to withstand upward forces from, for example, wave action in a marine environment.