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Danyang–Kunshan Grand Bridge


Danyang-Kunshan Grand Bridge is the world’s longest bridge with a length of 102.4 miles from Shanghai to Nanjing as part of the Beijing-Shanghai High-Speed Railway. This bridge was originally built to transport trains on one of China’s premier high-speed railways over an incredible distance. It is located in Nanjing, Shanghai.

This bridge falls into viaduct category, which is composed of several small spans for crossing a valley or a gorge.  It crosses over a number of different terrains including rivers, canals, chasms, streams, flatlands, hills, lakes, and fields of rice paddies.

Early Planning of the Project: –

Many architects and designers from different countries were involved in the task of accomplishing the creation of world’s longest bridge. They initially estimated a four years timescale to build this bridge and despite challenging terrain, canals, lakes and many other obstacles, it was built within the four years.

Overcoming the terrain challenges: –

Designers decided to build a viaduct because of the terrain challenges. A viaduct is a bridge consisting of various small sections. These shorter spans give flexibility required to rise and fall, twist and turn. This technique helps the bridge to remain sturdy for a long distance. The bridge had to be reinforced as most part of the land in the Yangtze River’s flood plain consists of soft soil instead of firm bedrock.

Yangtze River

Quick Facts: –

  • Danyang-Kunshan Grand Bridge was opened on June 30, 2011. The total cost of the project was 8.5 billion dollars.
  • The construction of the bridge took 4 years to be completed with a workforce consisting nearly 10,000 people.
  • The main purpose of the bridge is to solve the railway traffic in the area.
  • It is sturdy enough to withstand natural disasters like typhoons and magnitude 8 earthquake and also direct impacts from naval vessels that weigh up to 300,000 tons.
  • This bridge hosts a train line that runs between Shanghai and Nanjing in East China’s Jiangsu province.
  • For the most of its journey, the Danyang-Kunshan Grand Bridge follows the flow of the Yangtze River.
  • A 9 kilometers long section of the bridge spans over the open water of Yangcheng Lake.
  • It was built on top of 2000 pillars, steel cables and impressive 450,000 tons of steel structure.
  • The rail transport segment of this bridge named Langfang–Qingxian viaduct covers the distance of 70.8 miles.
  • This bridge is also considered part of Beijing-Shanghai High Speed Railway.
  • After the bridge’s construction, the travel time to Ningbo to Jiaxing has reduced to 2 hours. Beforehand it used to take 4.5 hours.


Danyang-Kunshan Grand Bridge Root Map: –

Danyang-Kunshan Grand Bridge Map


Question & Answers: –

Ques. What was the main purpose of building this bridge?

Ans. This bridge was built to transport trains on one of China’s premier high-speed railways over an incredible distance.


Ques. What type of bridge is the Danyang Kunshan Grand Bridge?

Ans. It is classified as a viaduct because it consists of several small sections.


Ques. How many workers were employed during the construction of this bridge?

Ans. Approximately 10,000


Ques. How many years did the bridge take to complete?

Ans. Four years


Ques. The section that goes across open waters of Yangcheng Lake in Suzhou and this part is built on top of how many pillars?

Ans. It is built on the top of 2,000 pillars.


Ques. What is the approximate height of the bridge from the ground?

Ans. The average height of the bridge from the ground is 100 feet.


Ques. What is the bridge’s average width?

Ans.  This bridge’s average width is measured to be 260 feet.


Ques. When did construction of this bridge begin?

Ans. Construction began on April 18, 2008.


Ques. When was construction work on the bridge completed?

Ans. The bridge was completed on November 15, 2010.


Ques. When was the bridge was officially opened?

Ans. In June 2011


Ques. How long is the Langfang-Qingxian viaduct?

Ans. The Langfang-Qingxian viaduct is measured to be 114 kilometers.


Ques. What is the largest body of water crossed by this bridge?

Ans.The largest body of water it crosses is Yangcheng Lake, spanning an area of about 5-and-a-half miles.

Danyang-Kunshan Grand Bridge


Danyang-Kunshan Grand Bridge Fact Sheet: –

Construction started 2006
Completed 2010
Total length 164,800 meters
Opened   June 30, 2011
Project cost  8.5 billion dollars
Body of water Yangcheng Lake
Bridge type  Viaduct
Capacity 18 million visitors annually
Average height from ground 100 feet
Average width 260 feet
Location                               Nanjing, Shanghai


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