I just checked quickly , and example Hungary has 40tons of limit on lot of brdiges.That bridging thing is nonsence. US tanks went all over Croatia and Bosnia-Hercegovina, Albania, Macedonia, Kosovo, and not a single bridge collapsed. All bridges are allways over-engineered to be able to have much more weight than necesarry. They might need to go one-by-one, but they certainly can cross and sort of modern bridge.
There are countless bridge than can't support even T-72 tanks.
There are roads that can accomodate Abrams tanks, as special delivery, but it means big part of the country not accessable by them.
Means you deploy them where you can, not where you want.