Can anyone explain why roads sometimes appear as supports and vice versa?

[squid_x1]

I'm a bit puzzled here. Can anyone explain why, when build a sloped bridge, that sometimes the roads appear as supports an vice versa? It's very frustrating, especially when you're building a symmetrical bridge and one side comes out okay but when you're making a mirror image of the first half it just doesn't work. Is there something I'm missing?

[dmr]

There are three rules for whether a support appears as a road:

First, the starting point has to be a road.

Second, it has to be within a certain slope angle of the road it starts from. It doesn’t have to match the slope at the other end however.

Third, it can’t be steeper than a certain angle.

The result of this is that there are a whole bunch of bridges that you can only make by building out a bunch of temporary roads to get the right slope and then later going back and deleting them.

[bbkr]

No. This is because this game is bugged AF.

If you are building symmetrical bridge and last piece of road suddenly changes to support piece when you want to complete path then:

* finish road one unit before
* click and hold dangling end of such road
* drag it one unit and close the path

Suddenly game will see no trouble in having road where it was previously switching to support. It's not angle rule, it's an unresolved, everlasting bug.

[dmr]

That’s because the end point road doesn’t match the road angle. You need to draw it into air first and then drag it to the end point and it will ignore the angle matching at the end.