320国道宜春段从高安市大城镇入境,到袁州区西村镇出境,境内全长187.34公里。2004年,宜春市完成对该路段由水泥混凝土路面向沥青混凝土路面的改造(俗称白改黑),并将万载至宜春段42.52公里的公路改造成一级公路。自改建通车以来,该路段作为宜春区域经济主动脉的功能日益凸显,对沿线区域经济发展产生了巨大的推动作用。一、促进了道路交通经济效益的明显提高320国道宜春境内原为一般二级公路,其中万载至宜春段2000年的年均交通量已达7576辆/日。大城至万载段2001年的交通量亦在4770-7740辆/日之间。由于交通量急剧增长,重车比例不断增加,加上道路街道化程度高,混合交通量大,导致路面破损严重,通行能力差,交通事故时有发生,严重影响了 320 State Road Yichun section entry from the town of Gao’an City, to the exit of the West Village in Yuanzhou District, the territory of a total length of 187.34 kilometers. In 2004, Yichun City completed the reconstruction of this road section from cement concrete pavement to asphalt concrete pavement (commonly known as white blackened black) and transformed 42.52 kilometers of highway from Wanzai to Yichun into a first-class road. Since the reconstruction and opening to traffic, the section has become increasingly prominent as an economic aorta in Yichun region, which has greatly promoted the economic development in the region along the line. I. Promote Significant Improvement of Economic Benefit of Road Traffic 320 National Highway of Yichun was originally a general secondary highway. The annual average traffic volume of Wanzai to Yichun in 2000 reached 7576 vehicles / day. The traffic volume from Ayutthaya to Wanzai in 2001 was also between 4770-7740 vehicles / day. Due to the rapid growth of traffic volume and the increasing proportion of heavy vehicles, coupled with the high degree of road street level and large mixed traffic volume, serious road damage, poor traffic capacity and traffic accidents have occurred, which seriously affected the traffic accident