The bridge might be a wonder to behold, but in a practical sense, it is not practical. It serves an essential link from the City to Marin County, but at a expensive price. If a tourist wants to save money, he will walk across instead of driving. However, there is a real possibility that the weather would be too cold, wet, and/or windy to enjoy the walk across the span.
Pros: views, bigger than life, can drive it or walk
Cons: toll is too expensive, there is no stopping, often windy