And, as already hinted, apart from military logistics:
Measures are being taken to restore the situation. I ask residents and guests of the peninsula to refrain from traveling through the Crimean bridge and, for security reasons, choose an alternative land route through new regions.
Civvies are going to have to route past battle damage (if not that bridge, once sufficiently patched up again, the areas where the original Russian attacks might not yet have been "sanitised away" and Ukrainian attacks are now the threat of the moment). Anyone somehow blissfully unaware of the encroaching warzone (after arriving to have summer frolics on whatever beaches aren't actually hedgehogged up to the armpits) is going to be made more aware.
Various reports I've seen (all ultimately quoting Russia's ztatements, so add NaCl to the mix, even without the following confusion of details) also suggest there were two deaths. Either the parents of a young child or two people,
including a young child. Some personal and (certainly) collateral civilian casualties, of course, if true. And possibly creating an orphan/at least one grieving parent (depending upon the accurate and true circumstances). That said, I expect Moscow to make disproportionately more fuss about it than the many other examples (that they caused). I'm going to feel unhappy about those involved, but be reasonably content that it's just wrong-place-wrong-time reasons, without specific (or general) intent to cause such distress.
I've actually yet to see hard and fast news on whether or not it was both rail and road (and how it might affect each carriageway at that point, if it's still has two somewhat separate at that point in the crossing). If it is just limited, it might just be the(/a) roadway, under the reported circumstances. But it offers the chance to have limited the rail too (or have yet another go, shortly, and do so properly).
Tempted to quote from either Rocky IV or Predator, as my immediately obvious cultural regerences, but I'll refrain for now.