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December 28, 2009

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Minpu is two bridges in one

THE Minpu Bridge, the city's first two-deck bridge, is expected to be put into operation this week, constructors said over the weekend.

The bridge across the Huangpu River will cut travel times from downtown to suburbs, Pudong International Airport and the neighboring Zhejiang Province. It is the eighth bridge across the Huangpu River, and the first bridge connecting the airport and downtown.

The bridge, built especially for the 2010 World Expo, is about 3.9 kilometers long and the longest bridge of its type in the world. The upper deck is a 44-meter-wide, 8-lane highway, with a maximum speed limit of 120 kilometers per hour. It will be a part of the Pudong Airport Expressway, connecting Zhejiang and the airport.

The lower deck will be a 28-meter-wide, 6-lane road, with a speed limit of 60 kilometers per hour, to connect Minhang District along both banks of the Huangpu River.

The main tower of the bridge is H-shaped and 210 meters high, bridge designers said.

The bridge not only allowed a highway across the Huangpu River, but also saved on land and costs. Ma Biao, deputy chief engineer with the Shanghai Engineering Design General Institute, said the position available for such a bridge on the Huangpu River was rather limited, thus they considered putting the highway and the road together.

The cross section was designed as an inverted ladder shape, which saved steel, he said.


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