AASHTO Interchange Design

[wizman]

I Would like to get input regarding AASHTO's geometric design of cloverleaf interchange particularly its loop compound curve radii and lengths, Also on weaving length for the on and off loop terminals.

Hoping someone here could shed some light or point me to the right direction.

Thank you.

 

[bridgebuster]

The AASHTO Green Book is what you need; Chapter 10. Also, look at your state DOT standards because some states, like NY, modify the AASHTO standards.

 

[wizman]

Thank you for your reply, I have read chapter 10. The compound curve at loop terminals was not discussed in detail. I was hoping one could explain better the geometerics.

Regards