The chances of bikes going over the top of the bridge are about the same as seeing whales on top of a mountain.
Are they offering a stadium climb? Adelaide Oval has one.
There's nothing to climb.
Subiaco Oval had a stair race on two occasions. I don't know if the Perth Stadium has the same logistical ability. To be honest I haven't actually been into the stadium as yet, just the areas where I work.