New Super Highway Opens On Schedule
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The second stretch of Beijing-Tianjin Highway, the second main artery between Beijing and Tianjin, opened to traffic before the Olympic Games.
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Beijing-Tianjin-Tanggu Highway, first constructed in 1993, was the only highway from Beijing to Tianjin. As the largest city on China’s northern coast, Tianjin’s urban area is the third largest in China, ranked only after Shanghai and Beijing. Tanggu is a city about 30 km south of Tianjin and a port city for the Tianjin District.
When originally constructed the highway volume was estimated at 50,000 vehicles daily. Today rush hour traffic can reach congestion rates of 120,000 vehicles with an average volume daily at 70,000 to 80,000 vehicles. The traffic capacity is extremely insufficient and overload is a big problem. The highway has been repaired many times in recent years due to wide-spread pavement damage. As the road quality diminished and overloading developed, the number of traffic accidents along Beijing-Tianjin Highway rank first compared with other highways from Beijing to surrounding areas. To local residence, the highway became known as the Road of Death.
To solve the traffic problem between Beijing and Tianjin, to expand Tianjin to economic development, and to improve transportation for the 2008 Olympic Games (Tianjin is a co-host city for the Olympics and venue for football competition), a plan was devised to construct a new highway. The Beijing-Tianjin-Tangshan Expressway Number 2 Highway, known as the North Pass, is a bidirectional, eight-lane highway that opened in July 2008.
Built in two segments, from Fifth Ring Road, close to Xizhi River of Chaoyang District, Beijing Municipality, and ending at Beitang Town of Tanggu, Tianjin Municipality, the road is 177.8 km long and has designed speed limits ranging from 80 to 120 km/h. The total investment is 14,728,000,000 Yuan RMB, among which 9,900,000,000 RMB for Tianjin Section and 4,828,000,000 Yuan RMB for Beijing Section.
At the construction site of the Beijing Section of the Beijing-Tianjin Highway, when workers were paving the middle of what would be three asphalt surfaces, four Dynapac pavers (two F182Cs and two F141Cs) travelled in stair-step unison paving the roadway. A range of rollers, including Dynapac CC522, compacted the newly-paved asphalt to desired density of 97% in the top layer behind the pavers. Putting down a 41 m roadbed simultaneously was visually and physically impressive as bystanders felt the earth shaking. Mr. Jiao Wanli is the project manager of the Second Company of Beijing Luqiao Construction Group which is managing the construction of this segment of road called Bidding I on the Beijing Section. This stretch of road is a 17 km long, two-way, eight-lane highway. Jiao said specifications for the structure of the asphalt road surface of the main road has a top surface layer paved with 5 cm stone matrix asphalt (SMA16), a middle surface layer with 6 cm modified asphalt concrete (AC-20), and the bottom surface layer of 9 cm asphalt concrete (ATP-25).
About the Dynapac pavers, Jiao had many favourable comments stating, “Four of the six pavers were bought and the other two were rented. It is convenient to operate Dynapac pavers and they are easy to maintain. The long crawler tracks and wide rubber pads guarantee the best mat, and that includes paving easily over uneven horizontal surfaces.” Other reasons Jiao preferred the Dynapac pavers included the sealed and lifetime lubricated crawler tracks that require less maintenance and the precise electronic control steering for better, straighter pavement.
The Dynapac pavers moved at the speed of two kilometres per day which kept the project on schedule to finish in June 2008. By early July, the second pass of Beijing-Tianjin Highway was open to traffic.
According to recent news from the Beijing Municipal Commission of Development and Reform, a third highway between Beijing and Tianjin will be constructed to completely solve the traffic problem in this area. That highway, known as the Third Pass, is scheduled to begin soon.
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