Several consideration of scheme design for integrated treatment on broadening old roads;

Combined with many years practice,the paper introduced some problems of old road reconstruction,and proposed several methods of pavement design and construction for strengthening old road.

After a comparative analysis on the plans of widening the roadbeds of old roads, the paper proposes the optimization of comprehensive treatment.

A brief talk on the alignment design of the old road rebuilding;

Application of subgrade treated by dynamic compaction in old road rebuilding;

It is a effective old road rebuilding scheme that laying asphalt concrete layer on the old cement concrete pavement to improve its intension to meet the demand of traffic.

Simply discussing on the detection and evaluation of old road bridges;

This paper introduces reinforcing method and constructing measures of every parts of old road bridge according to practical experience of reinforce over limit transportation bridge and big bridges and middle sized bridges.

This paper discusses main problems involved in the transformation of old road and provides that it is better to widen inferior road in one side and widen super road on both sides.