Somebody needs to look into building either a pedestrian underpass or a bridge. An underpass would be a preferred solution, as a large amount of trucks pass the area, and that could lead to diffuculities with load heights. Let's get things happening, one bottleneck at a time.
You know the deal with campaigning, you have to contact people to make things happen. I suggest 3 people/orgs: Vicroads, the roads minister Tim Pallas and the local council.