[BJC]

It is nearly always advantageous to be able to go anywhere on the field quickly.

The bridges do not allow this by design. IMHO most of the "good" teams this year will be able cross the barrier with minimal effort on their part. However, these teams will also be able to manipulate the bridge in order to balance for the end game bonus. If you had to choose one, the bridge is the better choice as it allows you to attempt the end game without alliance assistance.