镇江市地处江苏省西南部,全市低山丘陵以黄棕壤为主，岗地以黄土为主，平原以潜育型水稻土为主。镇江市国土面积3847平方公里，拥有人口311.45万人。公路是国民经济重要的基础设施,至2012年底，全市全社会公路总里程达7068.464公里，平均每百平方公里土地面积占有公路183.74公里，平均每万人口拥有公路22.70公里。全市国道里程263.796公里（国家高速公路124.39公里），省道400.082公里，县道1082.685公里，乡道2337.237公里，村道2964.261公里，专用公路20.403公里。全市等级公路里程7068.464公里，占总里程的100%。其中高速公路182.105公里，一级公路714.487公里，二级公路894.163公里，三级公路626.538公里，四级公路4651.171公里；全市高级路面里程6109.249公里，路面铺装率86.4%。简易铺装路面（次高级）里程105.625公里，未铺装路面（中级、低级、无路面）里程853.59公里。6754
公共汽车穿梭于城区主要路段。公铁立交桥的建成，使相互交错于铁路、公路干线上源源不断的车辆畅通无阻。该地区地面起伏，山丘连绵，仅靠等外路不利于城镇居民交往及对外发展，沿线砂石材料丰富，有小型的采石场和石灰厂，提供了良好的基层材料，施工时可因地制宜，就地取材；本项目是镇江主要交通干道，建成后既可缓解交通状况，开发区域经济，又可促进小型厂企的投产扩产，故而可以充分调动广大群众筑路的积极性，通过多种渠道，多形式的筹集资金，因此，为了达到方便快捷，促进经济的发展的要求，有必要、有能力在两地间修一条等级较高的公路。
关键词： 镇江；地理；交通；公路
Design overall direction
Zhenjiang is located in the southwest of Jiangsu Province, the city's Hilly to yellow brown soil, loess mainly to the hill, plain in gleyed paddy soil. Zhenjiang land area 3847 square kilometers, with a population of 3114500 people. Highway is an important infrastructure of the national economy, to the end of 2012, the city's total highway mileage of 7068.464 km per 100 square kilometers, land area of highway 183.74 km, average every ten thousand population has 22.70 kilometers of roads. The city's highway mileage of 263.796 kilometers (National Highway 124.39 km), 400.082 kilometers highway, county road 1082.685 kilometers, 2337.237 kilometers rural road, village road 2964.261 km, 20.403 km road. The city's highway mileage of 7068.464 kilometers, accounting for 100% of the total mileage. The 182.105 km highway, a highway 714.487 km, two highway 894.163 kilometers, three highway 626.538 kilometers, four highway 4651.171 kilometers; the high road mileage of 6109.249 kilometers, the rate of pavement, 86.4%. Simple pavement (Senior) mileage of 105.625 kilometers, not pavement (low, intermediate, no road mileage of 853.59 kilometers).
The bus traversing urban main sections. Male iron overpasses, make interlaced built in railways, highways continuous vehicles on unimpeded. The region ground ups and downs、hills, continuous high on only DengWaiLu against urban associate and foreign development along the sand material, rich, have small quarry and lime factory, provides good subbase materials, construction when can adjust measures to local conditions, use local materials; This project is  the main highways in Zhenjiang, can not only ease traffic situation, development, and promoting regional economic expansion of small factory production enterprises, so can mobilize the enthusiasm of the broad masses road, through a variety of channels, many forms of raise money, therefore, in order to achieve a convenient and quick, promote economic development request、 necessary, have the ability to build a level higher traded between the highway.  
KeyWords： Zhenjiang；geography；traffic；road
目录
1  引言1
1.1  概述•1
  1.1.1  公路运输特点•1 省道公路设计说明书+CAD图纸:http://www.youerw.com/gongcheng/lunwen_4419.html