Help with creating an Y intersection

Hi there.
I’m working on Half-Life remake for Fallout 3 game and I’m trying to make an Y intersection from this piece of original mesh without harming an UV layout:

For better understanding there’s video that depicts exatly what I’m trying to achieve:

On the video you can see that rails are going left…


… but I think I’ll need the “right” version too:


I uploaded a *.blend file with both textures so you can look at it if you have some spare time.


Attachments (1.18 MB)