You can take a bus to the bamboo forest from Chengdu Xinnamen bus station. The distance is approximately 330 km.The buses go through Chengdu-Chongqing express way, passing Longquan, Neijiang, Yibin, then arrive at bamboo forest, the whole trip takes about 5 hours. The road condition is very nice, all of the road is concret covered.Driving on the road is quite easy.