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青海省地处青藏高原北部,地域辽阔,地形复杂,山大沟深,河流纵横,自然条件差,平均海拔3000米以上,是长江、黄河、澜沧江的发源地。随着国家进一步加大基础设施建设投资力度,尤其是西部大开发政策的实施,青海在不断加大国省主干道建设的同时,大力实行通县油路工程及县际公路建设,公路建设事业得到了长足的发展,公路的通行能力和服务水平进一步得到改善和提高。由于植被覆盖较差,雨季常有洪水和泥石流发生,为了保证公路畅通,减少自然灾害,在公路建设中修建了较多桥梁,到2002年底,建有桥梁2161座,计55262米,其中特大桥8座,大桥74座,中桥287座,小桥1792座,半永久性桥7座。
Qinghai Province is located in the northern part of the Qinghai-Tibet Plateau, vast territory, complex terrain, mountain ditch deep, vertical and horizontal rivers, poor natural conditions, with an average elevation of 3000 meters above sea level, is the birthplace of the Yangtze River, the Yellow River and the Lancang River. As the state further increases the investment in infrastructure construction, especially the implementation of the policy of western development, Qinghai, while constantly expanding the construction of major roads in the country and province, vigorously implements the construction of the Tong County oil pipeline project and inter-county highways and the road construction business Thanks to the great development, the traffic capacity and service level of the highway have been further improved and improved. Due to poor vegetation coverage, floods and debris flow often occur during the rainy season. In order to ensure the smooth flow of roads and reduce natural disasters, more bridges have been built in the highway construction. By the end of 2002, there were 2,161 bridges with a total area of 55,262 meters, 8, 74 bridges, 287 bridges, 1792 bridges and 7 semi-permanent bridges.