After practising in Hongchen road surface design of comprehensive transformation works, two technique problems were discussed about road surface rebuilding and broadening in road extension design.

• 通过洪城路综合改造工程的路面设计实践,对改扩建道路设计中路面加铺及加宽两个技术难题进行了探讨,提出了一些设计处理方法。