TreeFrog, the problem is, missiles are too puny to seriously damage a bridge.
The videos from the Antonov bridge show holes about 10-15 feet in diameter. Those can be repaired quickly.
You need something heavier. So if the HIMARS can take out the Russian PVO and PRO (anti-air) systems defending those bridges then maybe bombers can get to them.
True, but it is also true that the himars did some damage and if more of them can get through it is not out of the question that they can do more damage. Taking out the air defenses would also allow that.
Anyway, the bigger picture is that they are taking the fight to the bridges in some form finally. Air strikes are fine in theory and larger missiles as well but the months are going by and I am satisfied for the day to see some movement. More is better. It has only been about ten days since we got past this foolishness about not being able to use the longer range missiles with the himars. Lord knows how long it would take for the powers that be to agree to use even larger missiles. Let em hammer them a few times more with himars before concluding that they are too puny.