The northern half of the scheme is on an elevated structure where it crosses the flood plain of the Afon Artro; the southern half is in a cutting through the hill south of Mochras Road.
Mae hanner gogleddol y cynllun ar strwythur uchel lle mae'n croesi gorlifdir afon Artro; mae'r hanner deheuol mewn cloddiad drwy fryn i'r de o Ffordd Mochras.