Multiplex pairs

[kphoger]

I like how we now have two separate threads running together.

[roadman65]

Does the 31-431-70-70S intersection in Nashville count?  Not really a multiplex, as all four routes only meet at that intersection.

I've been in Nashville twice (in 2006) and I recall some crazy concurrencies there, i.e. 70S/70.

Having said that, I am not sure if 41A is concurrent with 41 on 8th Street, where 31 and 431 run together as well. 

I am sure they do, though they do not split together as pairs that is why I did not mention it.  US 41 Alternate is one continuous route through Downtown Nashville even though it could be two different loops off its parent.