I can't tell from the picture, is there a pedestrian accomodation?
If so, I would ride that, slowly. Consider me transitional VC.
If not, then, a rant:
All bridges need to have pedestrian accomodations if for no other reason than emergencies/accidents/breakdowns/zombie attacks.
after the rant, I think I would have to consider conditions each time: wind, weather, traffic, and pick the least of evils for that moment.