The damage characteristics and shapes of bridges,especially bridges in mountainous area were summarized through investigaing the seismic damage of bridges in strong earthquake areas of Wenchuan earthquake in 2008.

Based on the features of highway in mountain areas in Shanxi Province,this paper analyses the suitable types of bridge structures,and provides principles that should be followed when highway bridges are designed in mountain areas.

More than 300 bridges in two highways are inspected and on basis of the results common defects of highway bridges are summarized.

Investment control analysis of mountainous freeway construction;

Combined with field practice,the paper discussed some problem and measures of bridge and culvert measuring and investigation of mountainous freeway.

At present, it is backward to the design method and idea of the mountainous freeway landscape in China.

Type selection of bridges in mountain expressway;

Research on Method to Confirm Minimum Radius of Circular Curve of Mountain Expressway;

Comparison and selection on design scheme of mountain expressway's bridge

Initial analysis on mountainous expressway design and environment protection and countermeasures

For the characteristics of mountainous expressway,the paper proposed all kinds of cross shapes and discussed and analyzed its suitability.

The paper discussed the main points of horizontal,vertical alignment and cross design for single-trumpet interchange ramp in mountainous expressway for reference.