Thotsamarachan Bridge

About

Thotsamarachan Bridge, tentatively named Rama IX Bridge Parallel Bridge (9), is a cable-stayed road bridge across the Chao Phraya River in Bangkok, on the route of the Rama III-Dao Khanong-Western Outer Ring Road Expressway, operated by the Expressway Authority of Thailand. It is the first double-pillar cable-stayed bridge in Thailand, with 8 lanes and approximately 42 meters wide, making it the widest river-crossing bridge in Thailand. It is located parallel to the downstream side of Rama IX Bridge and was built to replace Rama IX Bridge, which will be closed for renovations after the full opening of the Rama III-Dao Khanong-Western Outer Ring Road Expressway. The Ministry of Transport has also designated it as a project in honor of King Vajiralongkorn. Construction began on January 16, 2020 completed on March 30, 2023 and His Majesty presided over the opening of the bridge on December 14, 2024 but traffic began to open on January 29, 2025. It is expected to be able to accommodate a large volume of cars, approximately 150,000 cars per day.

Adapted from Wikipedia (CC BY-SA). Photography via Wikimedia Commons.