Passed over overpass

I have been wanting to paint this elevated highway scene for a while. This is where 30 and 405 intersect in NW Portland.
These overpasses are so over scaled and must have been quite the undertaking.
I like this scene because of the way the curves intersect. I have seen these things painted by a few artists and thought that now was the time to give it a try.
There is a simplicity here that I can focus on as well.
This image is of the under painting.