Abstract: A cable duct for protecting communication cable is provided, comprising an elongated body portion having a first end and a second end, the body portion further including a longitudinal axis extending between the first end and the second end; and at least two passageways formed completely through the body portion and extending substantially parallel to the longitudinal axis, each of the passageways having a cross sectional area sufficient to loosely contain at least one communication cable. The cable duct is constructed from a combination of materials including plastic and crumb rubber, preferably in a 1:1 composition, and includes a plurality of external ridges formed perpendicular to the longitudinal axis. The body portion further includes end connectors which are removably attachable to the first end and/or second end for connecting the cable duct to a second cable duct.