Does a bridge made of boats offer a superb method for crossing waterways?

Question

What are some disadvantages in comparing with ropes and buoys?

Answer 1

It's quick to do and eficient. Ask Caesar, who crossed the river Rhine or Xerxes, who crossed the Hellespont. It has been done very often since their times.

Answer 2

it's one way to do it but i cannot see how a floating bridge would be "superb" in any respect except war.  it's flexible, and a solid structure  would both allow more weight to be carried across it as well as be more easily driven upon.