Intersection editing

[Jeff_M]

I have a 4-way intersection designed using the Intersection tool. It all works great. Except now the City has decided my secondary road is going to be upgraded to a major collector. This means it must now be the through street with the centerline slopes maintained while the previous main alignment becomes the secondary. Is the only way to this to just suck it up, delete the original intersection and create an all new one?

[Joe-Bouza]

I didn't find a way to change to maintain crowns either. That would be a very nice button

[BrianHailey]

When you create the intersection there are buttons that you can use to change the primary alignmnent.

I figured these would be in the intersection properties as well but I can't seem to find any way to change them.

I suppose, if the alignment geometry outside the intersection is pretty simple, you could rotated the alignment 90 degrees and then rename them. Seems like a lot more work then recreating the intersection though.

[Neilw_05]

When you consider how the 2 types of intersections are modeled I can understand why it's not so simple to switch between them.

The "Crown Maintained" type uses an alignment and profile along the edges of the main road across the intersection as targets for the subassemblies and the "blended" type uses the centerline alignments and profiles as targets. It would a require a major reconstruction of the intesection to switch.

[Neilw_05]

I just realized the issue here is switching the main and secondary roads, so totally different scenario, but considering how it requires switching the alignments and targets it would also be a major reconstruction.

[Neilw_05]

I haven't checked this but I think you can switch the primary and secondary alignments IF you don't create the curb returns, alignments and profiles. In that case the intersection object just manages which profile gets locked to the other. If anyone has time, try creating an intersection without turning on the components and see if you can switch them after it is created.