Two large cable stay bridges are needed for Bangkok's South Industrial Ring Road, the latest major highway project in Thailand's capital. The bridges have concrete towers and have composite decks with main spans of 326m and 398m spans respectively. They will take traffic across the Chao Phraya river at a point where it doubles back on itself.
The city's port is located on the loop and the new dual three-lane motorway link will help freight traffic and out-of-city connections for trucks. A third section of the total Baht2.9bn (£40M) project involves building a 70m high elevated motorway interchange between the two bridges. Consultant is Norway's Norconsult, and contractors are a Japanese/ Thai consortium of Taisei, Nishimatsu, NK and Sino Thai for the bridges and Kajima Toykyu and Unique Construction for the interchange.