Why has the Crimean Bridge, also called the Kerch Strait Bridge, not been blown up? [View all]

[bluewater]

The Crimean Bridge, also called the Kerch Strait Bridge, or colloquially the Kerch Bridge, is a pair of Russian-constructed parallel bridges, spanning the Strait of Kerch between the Taman Peninsula of Krasnodar Krai and the Kerch Peninsula of Crimea.[d] The bridge complex provides for both road and rail traffic, and has a length of 19 km (11.8 mi),[e] making it the longest bridge Russia has ever built,[17][f] and the longest bridge in Europe.[18][15][19]

Having been considered since at least 1903, planning for the bridge began in 2014, after the Russian annexation of Crimea. In January 2015, the multibillion-dollar contract for the construction of the bridge was awarded to Arkady Rotenberg's Stroygazmontazh. Construction of the bridge commenced in February 2016;[a] the road bridge was inaugurated by Russian President Vladimir Putin on 15 May 2018 and opened for non-truck cars on 16 May and for trucks on 1 October.[7][20] The rail bridge was inaugurated on 23 December 2019 and the first scheduled passenger train crossed the bridge on 25 December 2019. The bridge was opened for freight trains on 30 June 2020. A record traffic was recorded on 15 August 2020 and amounted to 36,393 cars.[21]

https://en.wikipedia.org/wiki/Crimean_Bridge

This bridge is the main, no - make that the ONLY, railroad and highway link connecting Russia and Crimea.

Its strategic importance in conveying troops, equipment and supplies into Crimea and then on to southern Ukraine is simply immense.

Why is it still standing?

Surely, Russian air and missile defenses can't possibly be so impenetrable that this bridge cannot be destroyed, right?!?

EDIT ADDED:
A poster down thread suggested that this bridge might be out of range of Ukrainian jets or missiles.
If that is the case, does that mean we, the US and NATO, are afraid to give Ukraine missiles that _could_ reach this vital link?

Is it the case that we are afraid to give Ukraine missiles that would allow them to strike Russia itself? Hence they only get anti-tank weapons and short range stinger anti-aircraft missiles?

That said, isn't Crimea internationally recognized as sovereign Ukrainian territory? So, at least a portion of this bridge could be attacked since it indeed inside Ukraine, right?