[Gimli]

You should be able to put the pointer over the support beams during the fight (you can pause it first to stop the clock) to get an idea of how badly damaged they are. They should get wound status like anything else, that would give you a good idea of how much time is left. I would have at least a character or two work on the mage when you reach the bridge to disrupt her spells.

I pretty much fight in a straight line to the bridge, I do kill anything in my way, and then take out the ogres. Then I'll go back and clean up afterwards. Have never had the supports broken yet.