8. The 605
A.K.A.: San Gabriel River Freeway
Route: Seal Beach to Duarte
The 605, in of itself, is not too bad of a freeway. It's the merging in from other freeways you'll have to watch out for. Those coming in from the 10 Freeway during rush hour are going to face a mad house, to say the least. Likewise, if you're driving on the 605 and see those drivers flooding in from the 10, you'll probably feel inclined to speed up.