At this point, it almost seems like Ukraine is happy to let Russia keep funnelling troops and equipment into Crimea, and just use it as a huge kill-box with nowhere to hide
Taking down the bridge was one of the things the German officers where caught discussing in that intelligence SNAFU.
They said the bridge was the size of an airfield and would take more than 20 Taurus missiles to take it out. And the Taurus missile was specially designed to bust high value reinforced targets. And it was not even clear if they where just talking about the car bridge only or included the rail bridge.
I hope the creative ukranians find a way to take out the bridge tough.
An additional point is that the bridge was also a main supply route for troops on the zaporizhia front, but the Russians have been working non stop to install a coastal railroad from Rostov to Mariupol.