I'm trying to find a way to create 3D bars on top of a google map along road lines representing some parameters related to the state of the road. I am trying to achieve something similar, but instead on Google Maps.

I tried to find available graphic libraries. The closest I could get to is Mapbox using hexbins
However, it is not flexible enough to include my own user interactions and management.
Another impressive demo I've come across is this from Xibis. However, this is just a model, and I could not understand how this is done.

Are there such libraries or any ideas for achieving something like this?