The autumn is clear and the air is clear, and the construction of the first expressway in western Beijing, National Highway 109, is in full swing, and the overall construction progress has exceeded 70%. “The project is located in the western ecological conservation area of ​​Beij

The autumn is clear and the air is clear, and the sky is clear. The construction of the first expressway in western Beijing, National Highway 109, is in full swing, and the overall construction progress has exceeded 70%. "The project is located in the western ecological conservation area of ​​Beijing, the first-class water source protection area of ​​Yongding River, Baihua Mountain and Lingshan Municipal Nature Reserve, Xishan National Forest Park and the natural and cultural landscape belt along the Yongding River ." Yesterday, at the construction site of the National Highway 109 New Line Expressway, Song Kai Zhanwang, general manager of the General Contracting Department of China Railway National Highway 109 New Line Expressway, said that after the completion and opening of traffic in the future, the scenery of the four seasons will change, and driving is like a painting, and it is expected to become the most beautiful expressway in western Beijing. The scenery along the new expressway of National Highway 109 is beautiful. As if driving in the painting, it is expected to become the most beautiful expressway in western Beijing

National Highway 109National Highway Qingshuihe Bridge spans between green mountains and is spectacular. National Highway 109National Highway 109National Highway (Beijing Section) is the first expressway in Mentougou, western Beijing. It is currently the longest mileage, largest project scale and highest investment in Beijing.

The existing National Highway 109 winding and hovering takes a long time. After the new highway is completed, the traffic time will be greatly shortened. The starting point of the project is the Junzhuang Interchange of the West Sixth Ring Road. Finally, the city border connects with the Zhangzhu Expressway . The total length of the line is 65.4 kilometers, with a designed speed of 80 kilometers per hour. It is planned to be completed and opened to traffic on December 31, 2023.

Junzhuang Interchange crosses the Yongding River and is connected to the West Sixth Ring Road along the

project. The mountains are undulating, the river is winding and the scenery is beautiful. The complex geographical environment has brought unprecedented difficulties to project construction. According to reports, the bridge-tunnel ratio of the entire project is as high as 91%. Two tunnel groups are arranged on the entire line, with a length of about 10 kilometers. It is a rare large-span highway tunnel group in North China and even the country. Among them, the Yinma'an Special Long Tunnel, built by China Railway Second Bureau, crosses 28 different fault and breaking belts along the line. After completion, it will become the longest three-lane highway tunnel in Beijing.

Junxiang Super Bridge hovered in the mountains like a dragon, which was very spectacular. "The entire project is in the range of Mentougou river and lake blue line, ecological red line, water source protection area , million acres of afforestation and forest land, with high ecological and environmental protection requirements." Song Kai introduced that the project crossed the Yongding River three times. In order to reduce the impact on the river, two of the bridges spanned one by one, and there is no river pier. The Anjiazhuang Super Bridge, which was constructed by China Railway Sixth Bureau, inevitably set up piers in the river because the river channel is wide and has to cross Fengsha Railway .

Anjiazhuang Super Bridge Because the river channel is wide and it needs to cross the Fengsha Railway, a pier has been set up in the river channel

Zhaitang Super Bridge is the longest bridge in the project. The construction progresses smoothly

Yanchi Interchange is the first entrance and exit after driving from the West Sixth Ring Road in Beijing to the new highway of National Highway 109. Cao Yuanyi, chief engineer of the new highway project of China Railway Beijing Bureau National Highway 109, introduced that in order to protect the ecological environment of Yanchi Town, Yanchi Interchange adopts the "mutated single trumpet" shape in its design, and only one toll station is set up in and out of Beijing to reduce the occupation of arable land, and at the same time greatly reduces the impact on the Qingshui River channel, a tributary of the Yongding River.

Yanchi Interchange construction site, workers are directing the large-scale machinery lifting bridge deck

. "In view of the high bridge-tunnel ratio, complex technology, difficult construction, and wide application of new technologies, new achievements, and new materials, we require all construction areas to create excellent engineering quality throughout the entire process of design, construction, maintenance, operation management." Song Kai said that they are determined to build the project into a model line, demonstration line, and benchmark line of the " quality engineering " transportation system in Beijing and even the whole country.

Song Kai told reporters that although the new highway of National Highway 109 is called "national highway", it adopts the construction standards of expressways, two-way six-lane . After completion, it will improve the high-grade highway network in western Beijing, connecting Zhangzhuo Expressway and Taihang Mountain Expressway to the west, providing strong transportation support for Beijing-Tianjin-Hebei coordinated development of .

(Original title: The most beautiful highway in Beijing West reveals its new appearance)

Source: Beijing Daily Reporter: Feng Jiawei Correspondent: Zhang Cunyi Feng Wei Photography: Pan Zhiwang

Process Editor: u030

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