Does the increased use of pre-stressed concrete have anything to do with it?<p>T Y Lin discusses some neat aspects of bridge design that touch on this in his oral memoirs. [1]<p>IIRC, cable-stayed bridges have the advantage of being able to be cantilevered from the tower out during construction. Their disadvantage of compressive load on the deck goes nicely with prestressed concrete&#x27;s strength.<p>The whole memoir is really good.<p>&gt; Lin: This was all concrete. Except the cables. See, cable bridges are really prestressed concrete. To tighten the cables against the concrete, but put the cables outside; for ordinary beam, the cables are inside. When the bridge gets too long it is cheaper to put cables outside, so it s really a type of prestressed concrete bridge. They call it cable-stayed bridge. It&#x27;s post-tensioned concrete. So, okay.<p>[1] <a href="https:&#x2F;&#x2F;archive.org&#x2F;details&#x2F;fatherprestressed00tylirich" rel="nofollow">https:&#x2F;&#x2F;archive.org&#x2F;details&#x2F;fatherprestressed00tylirich</a>