I was wondering the same thing about how to develop an exposure plan for Bridges when it is either Cross the Bridge ,or not!
Here is what I came up with
Step 1: Hang pictures of Bridges (especially your particular bridge) around your house/desk. (I know this is hateful step, but hey, whats exposure for?) Like on the fridge/in bathroom/near bed.) I know the last thing I want to look at either is that dang bridge, but hey, that's what exposure's all about!
Step 2: Drive to a spot where U can see the bridge but dont have to cross it (like the exit before, or a place close by. Since U dont have to cross it, there should be less fear. Turn around and go home.
Step 3: Have someone drive you accross that bridge. ( I already do this now when I carpool, and have zero attacks; it's only when I am the one driving that is the prob).
Step 4: Have someone drive you accross the bridge 2 or three times simultaneously (back & forth & back & forth) so U are really bored stiff & sick of it and want to do it yourself
Step 5: Drive accross the bridge with someone else in the car, ON A WEEKEND MORNING VERY EARLY MORNING AM so there is no traffic, no distractions, and U can go as slow as U want. Put your blinkers on, put signs saying "student driver" or whatever else U need to do so people give U room and go around you.
Step 6: Weekend AM bridge drive again with someone else in the car (tusted friend), This time go accross several times, back & forth & back... First U might be going as slow as U need to get through it, hopefully U will pick up speed after multiple trips at same session.
Step 7: Drive bridge yourself on Weekend AM
Step 8: Drive bridge yourself during your regular commute time.