Thotsamarachan Bridge
Thotsamarachan Bridge | |
|---|---|
The view of the Thotsamarachan Bridge from Rama IX Bridge in January 2025. | |
| Coordinates | 13°40′55″N 100°31′05″E / 13.68201°N 100.51798°E |
| Carries | Rama III-Dao Khanong-Western Outer Ring Road Expressway |
| Crosses | Chao Phraya River |
| Locale | Bang Phongphang Yan Nawa District Rat Burana Subdistrict Rat Burana District Bangkok |
| Official name | Thotsamarachan Bridge |
| Other name | Rama IX Bridge Parallel Bridge |
| Named for | King Vajiralongkorn |
| Maintained by | Expressway Authority of Thailand |
| Preceded by | Rama IX Bridge |
| Followed by | Bhumibol Bridge 1 |
| Characteristics | |
| Design | Cable-stayed bridge |
| Material | Steel and concrete |
| Total length | 450 metres (1,480 ft) |
| Width | 42 metres (138 ft) |
| Height | 87 metres (285 ft) |
| Longest span | 781.20 metres (2,563.0 ft) |
| Piers in water | 4 |
| Clearance below | 41 metres (135 ft) |
| History | |
| Designer | Epsilon Company Limited |
| Constructed by | CH. Karnchang Public Company Limited |
| Construction start | January 16, 2020 |
| Construction end | March 30, 2023 |
| Construction cost | ฿6,636,192,131.80 million |
| Opened | December 14, 2024 |
| Location | |
Interactive map of Thotsamarachan Bridge | |
Thotsamarachan Bridge (Thai: สะพานทศมราชัน), tentatively named Rama IX Bridge Parallel Bridge (Thai: สะพานคู่ขนานสะพานพระราม 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.