 In a suspension bridge, the long cables are the primary load-bearing structures that are mainly responsible for the function of the bridge; for a cable-stayed bridge, the pylons form the primary load-bearing structures.For a bridge span of medium length, like that of the Térénez Bridge, a cable-stayed design is optimal from both structural and economic perspectives.Since the cables of the Térénez Bridge will not be exerting large horizontal tensile forces on the anchorages, construction of the bridge does not require excellent soil conditions.