How many kilometers is the Yangtze River Bridge?

The Yangtze River Bridge is 456 meters long.

Changjiang Road Bridge, also known as "Butterfly Bridge", is a river-crossing passage in Zhongshan City, Guangdong Province, China, which spans the Qijiang River (Seventeen Rivers) waterway and is one of the components of Zhongshan City Expressway. The tender for Changjiang Road Bridge started on May 6th, 2004. Construction started in May 2004; Closed on March 26th, 2007; It was completed and put into use in June 2008.

Changjiang Road Bridge starts from the triangle express line in the northwest and ends at Haojiang West Road in the southeast. It is 456 meters long and 29.6 meters wide. The bridge deck is a two-way six-lane urban trunk road with a design speed of 60-80 km/h. ..

Design parameters:

The overall span arrangement of Changjiang Road Bridge is: (north bank approach bridge) 23m+6x25m+ (main bridge) 1 10m+ (south bank approach bridge) 6x25m+23m = 456m, and the total length of the main bridge is (2.75+110.

The approach bridge is 25.5 meters wide and there is no sidewalk. The approach bridges on the south bank and the north bank are all seven-span continuous beams. The length of the main girder of Changjiang Road Bridge is 1 14m, the width of the top plate of the approach bridge is 25.5m, the width of the bottom plate is 8.6m, the horizontal curve radius is 650m, the longitudinal slope is 4%, the convex curve radius is 2000m, and the concave curve radius is 2000m. Single transverse slope of 4%.