i've tried building it vertically too, but the weird thing was that it needed LESS space? i had a pile of pipes on one side of the river and it could get as close as this:
about the vertical bridge:
i assume the game is logical, and the "extra" space is not in an irregular shape, this must mean the vertical bridge space requirement is maximum 2 by 4, like this:
you're welcome! yes, japanese stuff is great, why can't i buy facials masks with pretty manga illustrations on the packaging over here ;o;...??? or sandwiches with whipped cream and fresh strawberries on the corner of the street...;o;? aaa i miss it. when i was there, it felt like they put extra attention and care in everything it was so nice