Smallest Radii on loop ramp

[xcellntbuy]

There are extremely tight ramps to and from westbound NY 7 to/from NY 5 in Schenectady, NY.

[Alps]

Here's one that was forced inside of an already-tight urban diamond: https://maps.google.com/maps?ll=40.913209,-74.070913&spn=0.002019,0.00486&sll=37.6,-95.665&sspn=34.459634,79.628906&t=k&z=18

[Ian]

I was on this one yesterday. Behold the beauty that is the Surekill...
http://goo.gl/maps/XMTIS

[ftballfan]

WB I-96 to SB US-31 in Muskegon is a very tight pair of ramps that involves a very short section of Airline Rd (old US-16) to connect the two ramps.

[sbeaver44]

This one might be hard to beat, and I believe is posted at 10 MPH advisory on PA 12 at River Road:

Map:
http://bit.ly/ZpBXgt

StreetView:
http://bit.ly/Yw5B2j

[colinstu]

10mph advisory speed limit here too... but I don't find this ramp that tight...

https://maps.google.com/?ll=43.104923,-87.917544&spn=0.003085,0.005284&t=h&z=18