 Two main roads service the area , the <unk> runs through the Rhondda Fawr and the <unk> services the Rhondda Fach . The <unk> starts at Pontypridd runs through Porth before ending at Treorchy , where it joins the <unk> to <unk> . The <unk> begins outside Rhondda at <unk> , heading north through Porth and through the Rhondda Fach to Maerdy , where the road eventually links up with the <unk> at Aberdare . Two other A roads service the area ; the <unk> is a relief road , known as the Tonypandy Bypass and the other is the <unk> which links Treorchy to the Ogmore Vale before reaching Bridgend . 
