The NATO Summit is happening downtown Chicago. Expect the airports to have ramped up security as well so plan ahead. If you do plan to go downtown in the mornings / afternoons plan accordingly. I-55 is going to be closed around Lake Shore Drive and most of the Loop / Downtown area is going to have lots of closed off streets and street parking is going to be very limited. They are going to have armed guards throughout the city as well.
If you do plan on going to the city I highly recommend from Joliet take I-55 to 355 to The Kennedy. it is a bit longer of a drive but it will let you pass all the mess and come from the city on the other end.
If you do plan on going to the city I highly recommend from Joliet take I-55 to 355 to The Kennedy. it is a bit longer of a drive but it will let you pass all the mess and come from the city on the other end.