When we were there last July/August the roadworks were all but finished, but there were still cones everywhere and it was still pretty bunged up in places. In December the roadworks were all finished (they've made a really good job of sprucing it all up) and everything was free-flowing. Having said that we only used west 192 (from Splendid China to the Disney exits), but it sounds as though Dave's covered the situation further east.