There are none, short of full-scale frequent bombing (albeit even that is pretty hard to enact, mind you; Antonovsky Bridge in Kherson, which suffered extensive strikes, nonetheless collapsed only after Russians, who were leaving the right bank of Dnieper in Kherson region, had opted to demolish it, and I think their decision was erroneous). Opinion author may feel better lest he drink less kool-aid.

The Bridge was built with a significant margin of safety, as it has been proved after drone strikes and a downright terrorist act wherein explosive-filled van detonated (by the way, Ukrainian special ops squad then used driver as a blind mouse). In each case, Crimean Bridge suffered pretty mild damage, and proper traffic was soon restored.

But, moreover, even in pretty hypothetical case of its fall, the Crimean Peninsula still can be supplied with relative ease by means of Azov seaside railways and highways which Russians are busily building and restoring for almost a year.