Stop signs on interstates

[Mapmikey]

Here might be the definitive answer of the most recent stop sign on an interstate that is not related to gates/tolls/barriers, etc.

However, this is a technicality...

In May 2006, AASHTO approved a special request to designate GA 520 Jekyll Island Causeway as I-50 for one day - see http://route.transportation.org/Documents/USRN_Minutes_5-5-06.pdf.  I do not know if it was signed for that one day...

GMSV from 2009 shows that the west end of the causeway at US 17 had a stop sign - http://goo.gl/maps/i25gR

I accept your onslaught of tomatoes...

Mapmikey