The Yanghwa Bridge (양화대교) is an eight lane bridge spanning the Han River in Seoul. The bridge connects Mapo-gu on the north side of the river to Yeongdeungpo-gu on the south side of the river. The bridge is buttressed by the eastern end of the island of Seonyudo, home to Seonyudo Park (선유도공원). The old bridge's upper structure has a width of 18.0m, length 1,053m and is composed of steel plate girders and concrete box girders. The new bridge has a width of 16.1m, length 1,053m and is a steel plate girder bridge. The lower structure has an open caisson well foundation.