No, there's a pedestrian sidewalk all the way and people go for many reasons. People married there and they put a lock to consolidate their relationship. There's many bridges with locks in the world by the way. Probably there's travel agency who offer travel tour and explaining the history of the bridge, this will have a cost of course.
You don't pay anything to cross the bridge on foot, but you can purchase some souvenirs in the middle of the bridge.
No..
No, free to walk across
No need
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