With fuel fires burning that long on the rail bridge, the steel is useless now. I haven't seen any images of RU fire-fighting on the bridge to put anything out.

With fuel fires burning that long on the rail bridge, the steel is useless now. I haven't seen any images of RU fire-fighting on the bridge to put anything out. They'll need to replace the tracks at the very least. Likely they'll need to replace all of those sections of rail bridge. That would take ~2 weeks to a month in the US in peace time. As RU doesn't have span launchers, it's going to take them months to repair, if they even can get the pre-made spans to do so, what with sanctions. That bridge is kaput for at least 3 months, if not the whole war.