The coordinates bring you to the cache, but its altitude is not the easiest possible.
Spider or snake? This is a choice between two routes, each with its own pros and cons. The spider route is short and quick but also risky and challenging and requires courage and possibly a safety rope. The snake route is easy and safe but also dirty and wearisome and requires patience and possibly knee protection.
Do not remove the magnet from the cache box!
Note: I don't know how durable some certain structures in the bridge are. If you are heavy, use your consideration.