This is a bit more like what I was looking for. I've been trying to find ideas for a bridge in Vintage Story and I'm covering water that spans about 400 blocks or so and most of the bridges I could find where small bridged across streams with virtually no supports because the bridge wasn't long enough to call for them.
I'm using path block that gives speed boost when walking on it as the surface you walk on and wanted another layer below and beside that to sort of cradle it. along with room for light post on either/both sides to light the path as well as decently spaced out supports to make the bridge look sturdy.
my bridge wont be as high as this one the bottom of the bridge will be about 3 to 5 blocks above the water with a bridge thickness of about 3 blocks from the walking path to the under side of the bridge so not quite this big but this is at least something for me to go by.