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109国道青藏段俗称青藏公路。是目前内地通往西藏高原的陆上交通主动脉。其2278km+600m处位于青海省海西州乌兰县茶卡镇境内。1999年开始提高等级改造(原为三级公路),2001年都兰至茶卡段摊铺黑色路面后通车(至今尚未竣工验收)。改造后的这段公路为平原微丘二级路,路基宽12米,在翻过旺尕秀垭口后,一直沿山谷下坡
National Highway 109 Qinghai-Tibet section commonly known as the Qinghai-Tibet Highway. It is the land transport aorta that leads to the Tibetan plateau in the Mainland at present. Its 2278km + 600m is located in Chaka Town, Wulan County, Haixi Prefecture, Qinghai Province. Starting in 1999 to improve the level of transformation (formerly Road 3), in 2001 Dulan to Chaka paragraph paved road after the black pavement (yet to be completed acceptance). After the transformation of this section of the road for the plains micro-level two-way, 12 meters wide subgrade, turned over Wang Wan Ga I pass, has been downhill along the valley