Odd, they never mention taking out the Kerch bridge to cut off and trap the Russians in Crimea, after possibly splitting them in the south, or going the long way through Luhansk and Donbas.
One reason not to destroy the Kerch bridge would be partly political, all the Russians and Russian loyalists are using it to flee Crimea. This would depopulate the region of Russian sympathizers and loyalists and leave an escape route for Russian troops, but perhaps not their equipment, tanks would be worn out getting there without rail transport and everything could be out of fuel.