Mahai Sawan Road
It was named after the first governor of Thonburi province (now Thonburi), Mahai Sawan (พระยามไหสวรรย์) or Ko Sombatsiri (กอ สมบัติศิริ).
Mahai Sawan intersection is four-way connecting Somdet Phra Chao Tak Sin, Ratchadaphisek and Mahai Sawan roads beneath Rama III Bridge. Its original appearance was only three-way but, later on, Ratchadaphisek Road was expanded to become a four-lane like today. This intersection is considered one of the most traffic-congested routes of Bangkok. On September 30, 2016, a tunnel underpass was opened, fifteen years after the project was initially planned. The tunnel is 1,515 m (0.9 mi) long, the longest underpass in Bangkok, with four lanes. The total cost of the tunnel was about 969 million baht since the work begun in 2011.
References
- ^ gainer (2016-09-14). "ทำไมใช้ชื่อสี่แยกมไหสวรรย์". gainerblog (in Thai).
- ^ ""มไหสวรรย์" อุโมงค์ในตำนาน". Komchadluek (in Thai). 2016-09-30.