目前，该桥型修建较少。
我们完全可以说，赶州桥首开了敞肩拱式桥型的先河。
We can say that it is Zhaozhou bridge that marks the advent of the open-spandrel bridge.
介绍了目前西部农村建造中小跨径桥梁常用的桥型结构及特点；
The paper introduces the structure of the medium and small spanning bridges which is often used in western countrysides, and its characteristics.
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