I hate to spoil my secret, but there's a little exit called McDowell Creek Road. On game days, especially early games, it is the best way into town from the west. While cars are stacked up on I-70 clear back to Marshall Field, many of which actually STOP at the top of the ramp (idiots), I like to fly right by them and head on to McD Ck. There are times I've been in that way and I haven't seen a single car. The left turn onto 177 by the river isn't bad. It's even easier if it is busy.
It is a great way to get out of town too, especially for late games.