Pingtang Bridge

Pingtang Bridge (Chinese:平塘大桥) is located in Pingtanghe Village, Pingtang County, Guizhou Province, China.
The bridge runs from Tongzhou to the west, crosses the Caodu River Grand Canyon to the east, and connects to Yazhou to the east. The route passes through Dachong Village, Daao Village, Tongzhou Service Area Parking Lot, Luoyin Village, etc. It forms part of the Yuqing-Anlong Expressway (S26 of Guizhou Expressway).
 
The construction started on April 29, 2016, and the main bridge closing project was completed on September 26, 2019. The bridge was fully connected and opened to traffic on December 30, 2019.
  
The Bridge connects Tongzhou in the west, crosses the Caodu River Grand Canyon, and extends to Yazhou in the east. The total length of the bridge is 2135 meters, and the main bridge is 30.2 meters wide. The bridge deck is a two-way four-lane highway with a design speed of 80 km / h. The total investment is 1.5 billion yuan (US $ 215 million).

building structure

The Jintang Bridge is composed of the main bridge, three towers, piers, stay cables, and approach bridges. The main bridges are arranged from southwest to northeast.

Design Parameters

Pingtang Bridge has a total length of 2135 meters, the spans are (249.5 + 550 + 550 + 249.5) meters, and the mid-span has a 20,000-meter convex curve;
The main bridge deck width is 30.2 meters, and the approach bridge deck width is 24.7 meters.
The main beam is 30.2 meters wide, 3.36 meters high, and the steel main beam is 2.92 meters high.
The standard length of the steel longitudinal beam section is 12 meters. The towers 15 and 17 above the tower are 145.2 meters, tower 16 is 149.2 meters, towers 15 to 17 below the lower beam are 174.8 meters, 182.8 meters and 152.8 meters respectively, and the total height of the tower is 320 , 332 meters and 298 meters; the towers of Tower 15 and Tower 17 have a length and width of 40.8 × 27.4 meters and a thickness of 8.0 meters; the tower of Tower 16 has a length and width of 41.8 meters × 29.8 meters and a thickness of 8.0 meters.
Each main tower has 22 pairs of space cables. The standard cable distance of the mid-span cable stay on the beam is 12 meters, and the standard cable distance of the side span cable stays on the beam is 12 meters and 9.0 meters.

Construction history

• On April 29, 2016, the Pingtang Bridge started construction.On January 1, 2017, the Bridge completed the concrete pouring of the last side of the bridge tower platform No. 16.
• On June 7, 2018, the Pingtang Bridge completed the construction of the middle tower column
• On November 13, 2018,It completed the capping of all bridge towers.

• On September 26, 2019, the Pingtang Bridge completed the main bridge closing project, and the bridge was fully connected.
• On December 25, 2019, the Pingtang Bridge completed the delivery and acceptance work.On December 30, 2019, It opened to traffic.

Architectural significance

The completion of the Bridge will provide a useful reference for the design and construction of large-span bridges in mountainous areas in western China.
After the Pingtang Bridge was opened to traffic, the transit time from Pingtang to Luodian was shortened from two and a half hours to one hour, and it will become the main road connecting the south of Guizhou Province.

Pingtang Bridge Data

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