A utility conduit supporting device, system, and method for quickly and inexpensively securing multiple conduits, including cables, pipes, or other utility lines, to structural members such as I-beams and other planar or curved structural members, includes one or more clamping members, such as one or more beam clamps, and one or more elongate platforms with spaced apart connections for attachment members, e.g., conduit clamps. The device and method can be used to install utility conduits in multiple orientations, to readily fit between, over, under, or away from existing installations when additional conduits are needed, without having to measure, drill, and tap conduit supporting straps and without having to disassemble and reassemble existing installations, and to make use of void, unused spaces on structural members.