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Bangjangsan Tunnel and Bridge

Sangyo Bridge

The Bangjangsan Tunnel (방장산터널) and the adjoining bridge are located on National Route 31/Posco-daero in Pohang, South Korea.

The combination six-lane tunnel and bridge opened on May 20, 2008. 1 The tunnel was criticized for featuring zinc panels on the exterior portals at an extra cost of 220 million won.


  • State: South Korea
  • Route: South Korea National Route 31
  • Type: Beam, Tunnel
  • Status: Active - Automobile
  • Spans:


  1. “Pohang Tunnel Exterior Wall Construction Waste.” Asian News Agency. 19 June 2009. Web. 2016.

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