At 12.3 km long with a main cable stayed span of 800 m the new Incheon Bridge will be one of the five longest of its type in the world. Its 33.4 m wide steel/concrete composite deck will carry six lanes of traffic 74m above the main shipping route in and out of Incheon port and link the new Incheon International Airport on Yongjing Island to the international business district of New Songdo City and the metropolitan districts of South Korea’s capital, Seoul.
The cable stayed section of the crossing is 1,480 m long, made up of five spans measuring 80 m, 260 m, 800 m, 260 m and 80 m respectively: height of the inverted Y main towers is 230.5 m. A 1.8 km approach span and 8.7 km viaduct complete the crossing, both constructed with precast prestressed concrete box girder decks. Foundations are drilled piles 3 m in diameter.
Total cost is more than $1.4 bn, which is funded through a Private Partnership in Investment (PPI), the first in South Korea to involve an outside strategic investor.
The Incheon bridge is equipped with 76 mageba TENSA-MODULAR expansion joints. Largest expansion joint type LR24 (movement: 1,920 mm) equipped with ROBO-GRIP anti-skid surface, ROBO-SLIDE high grade sliding material and a ROBO-CONTROL remote monitoring system.
Dimensions of each modular joint type LR24 (LxWxH): 16 m x 4.9 m x 0.8 m. The large dimensions and the weight of nearly 50 tons per joint, required special measures for the transport from Europe to Korea.
TENSA-MODULAR, ROBO-GRIP, ROBO-SLIDE, ROBO-CONTROL
max. movement 1‘920 mm