ORD Carriageway Tie-in Best-Practice

Hello,

I have reached the point in my project where I need to tie-in the carriageway (dual carriageway, channels and lane markings, both ends of the alignment, so 20 elements which must be aligned both horizontally and vertically)

I have searched the training and the communities, and haven't been able to find anything that goes through the best way to model these tie-ins to existing, how best to measure the required existing dimensions relative to the geometry.

Can anyone provide any guidance, or point me in the right direction?

Euan