It will have an effect on movement of supplies into the Kherson/Zaporozhia area. Since the highways and railroads from Donetsk are already under bombardment, and the ports on the Sea of Azov likewise, this is another route that’s been interdicted.
This leaves just ports in Crimea, and probably the Kerch ferries as supply routes that are not yet under attack. But I have not heard that these are in use for this purpose.
It does not require 100% interdiction of all supply routes to have a military effect.
It all depends of course on what the actual damage is.
Oh no! The unrepairable bridge.