Project Description:

The Godeok-Topyeong bridge is a concrete cable-stayed bridge with a total length of 1,000m and a main span of 540m, making it the longest concrete cable-stayed bridge in the world. The bridge incorporates advanced materials, including high-performance concrete (80 MPa), ultra-high-strength stay cables (2,160 MPa), and ultra-high-strength strands (2,400 MPa).

Judges Comments

With a main span of 540m, this 1000m long structure is the longest concrete cable stayed bridge in the world. The closely spaced stay cables are arranged along the centerline, requiring the bridge girder to be a torsion box, and high strength, high performance materials are used extensively. These include 80 MPa concrete, stay cables formed from 2160 MPa steel wire, and 2400 MPa prestressing strands. Furthermore, the bridge has a 200-year design life, requiring particular care in detailing for fatigue and robustness.

Structural Designer

DM Engineering

Location

Seoul, Korea