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四川省凉山彝族自治州是一个森林资源比较丰富的山区,因此公路桥梁中,石台水面及木排架桥所占的比重极大。在凉山总段所管养的846公里公路中,木面桥占桥梁总数的90％以上。这些桥梁除部分跨径较大的有防水设备并作了防腐处理外,其余都是5年一更换。这样,不但多化劳力、投资,多用木材,也使工作被动,忙于应付。1959年后,总段根据上级指示,进行了改本面桥为石拱桥的工作,截至1965年上半年止,先后共改建成石拱桥58座954.7延米,一
Liangshan Yi Autonomous Prefecture in Sichuan Province is a mountainous area with abundant forest resources. Therefore, the proportion of highways and bridges in the Shitai River and the wooden bridge accounts for a great proportion. Of the 846 kilometers of roads maintained in the Liangshan section, Mufangqiao accounts for more than 90% of the total number of bridges. In addition to some of these bridges have a larger span of waterproof equipment and made a preservative treatment, the rest are 5 years a replacement. In this way, not only will labor, investment and lumber be multiplied, but also the work will be passive and busy. After 1959, the general section according to the instructions of the higher level, carried out the work of the bridge for the stone arch bridge, as of the first half of 1965, has been rebuilt into a stone arch 58 bridge 954.7 meters, a