Rare Pokemon In Emerald How Do I Get To The Rare Pokemon Area In The Safari Zone Of Pokemon Emerald?

How do I get to the rare Pokemon area in the safari zone of Pokemon emerald? - rare pokemon in emerald

There are some in Pokemon Emerald, where a man in the safari zone, "said the pokemon are on the other side of the bridge or something rare. He says he needs a bicycle ... How do I reach the other side?