It's a very interesting idea.LordAzamath wrote:About the bridges:
They are very nice indeed, but can't you apply a semi transparent shadow to the underneath of bridge? I believe for sprites 842, 843, 1004/1005, 1704-1709 etc., , so they'd look a bit like this (just a mockup):
But there is a problem, in the other direction of the bridges, the shadows wouldn't work well...

The solution would if it could be possible add sprites with the shadow to the bridge, but the current GRF system does not allow this. I think that bridges needs more improvements in OTTD (narrow bridges (one lane), one way bridges crossing bridges, signals in bridges, custom bridge heads, overtaking in bridges...). Also, It would be cool adding custom bridge (and pillars) layouts.