[SotM] 2012 September - Prepare for Battle!

[J6A]

Do the Americans even have a chance in this one. The bridge doesn't enter until turn 72. It takes 2 turns to reach a bridge hex. With 3 engineers, there is a 50% chance of rolling a 1, so 60 turns and it's now turn 134. That's 6 turns to cross 2 boards and take a town. Am I missing something?