Sangyo Bridge

The Sangyo Bridge (신형산교) carries National Route 31 over the Hyeongsan River between Pohang, South Korea and the Pohang Steel Corporation (now POSCO).

Twin beam bridges, each carrying two lanes of traffic, were opened on November 28, 1967, to serve an upcoming industrial area for Pohang. A four-lane tied arch bridge was constructed from 1977-78 ^{1 2} and a companion six-lane deck beam bridge was completed in 1995. ²

The 1977-78 and 1995 structures received pier reinforcement and pavement rehabilitation in late 2015 at the cost of 1.7 billion ₩. ^{1 2}

A cycle-track and pedestrian bridge were later constructed adjacent to the 1995 structure.

Hyeongsan Bridge prior to completion in 1967, leading to POSCO. Source: Naver.

The original Hyeongsan Bridge, to serve the POSCO facility, opened on November 28, 1967. Source: Naver.

Hyeongsan Bridge engulfed by floodwaters in 1970. Source: Naver.

Hyeongsan Bridge engulfed by floodwaters in 1970. Source: Naver.

Commuters from POSCO in 1972. Source: Naver.

The new Sangyo Corporation bridge is under construction in 1977. The original Hyeongsan Bridges are adjacent. Source: Naver.

The new Sangyo Bridge was opened in 1978. Source: Naver.

A 2009 view. Source: Naver.

Information

• State: South Korea
• Route: National Route 31
• Type: Tied Arch
• Status: Active - Automobile
• Total Length: 450 meters (1979); 586 meters (1995)
• Deck Width: 20 meters (1979); 30 meters (1995)

Sources

1. “Pohang Sangyo New Remuneration until the End of the Year Spent 1.7 Billion Won.” Songgo Times, 28 Sept. 2015. Web. 1 Jan. 2016.
2. “포항시, 신형산교·섬안큰다리 보수공사 추진.” Yeongnamilbo, 13 May 2014. Web. 1 Jan. 2016.