Phahonyothin Road

Phahonyothin Road (Thai: ถนนพหลโยธิน, RTGS: Thanon Phahon Yothin, pronounced [tʰā.nǒn pʰā.hǒn jōː.tʰīn]) or Highway 1 is a main road in Bangkok and one of the four primary highways in Thailand, which include Mittraphap Road (Highway 2), Sukhumvit Road (Highway 3), and Phet Kasem Road (Highway 4). It begins at Victory Monument in Bangkok and runs north to the Burmese border, with a total length of 1,005 km (624 mi).

"Phahonyothin" redirects here. For the Thai general, see Phot Phahonyothin.
National Highway 1 shield}}
National Highway 1
ทางหลวงแผ่นดินหมายเลข 1
ถนนพหลโยธิน
Thanon Phahon Yothin
Route information
Part of AH1 AH2 AH12
Length1,005 km (624 mi)
Existed1936–present
Major junctions
South endBangkok, Victory Monument
North endMae Sai district, Chiang Rai,
border to  Myanmar
Location
CountryThailand
ProvincesPathum Thani, Ayutthaya, Saraburi, Lopburi, Nakhon Sawan, Chainat, Kamphaeng Phet, Tak, Lampang, Phayao
Highway system

History
Phahonyothin Road passing 11th Infantry Regiment station
Mae Sai Pass

Phahonyothin Road was originally called "Prachathipat Road" (Thai: ถนนประชาธิปัตย์, Thanon Prachathipat, literally "Democratic Road"), and reached just 22 km (14 mi) to Don Mueang. In 1938, Field Marshal Plaek Phibunsongkhram had the road extended from Don Mueang, through Bang Pa-In, Ayutthaya, Saraburi, Lopburi, and Singburi, making it 162 km (101 mi) long. The newly lengthened road was renamed Phahonyothin Road, in honor of General Phraya Phahol Pholphayuhasena (formerly Phot Phahonyothin), the second Prime Minister of Thailand and one of the heads of the 1932 revolution.[1]

Route

In Bangkok, Phahonyothin Road originates in Ratchathewi district and crosses Phaya Thai, Chatuchak, Bang Khen, Don Mueang, and Sai Mai districts before continuing into Pathum Thani Province, and on through Ayutthaya, Saraburi, Lopburi, Nakhon Sawan, Chainat, again through Nakhon Sawan, Kamphaeng Phet, Tak, Lampang, Phayao and finally Chiang Rai, ending in Mae Sai district, where it connects to Tachileik in Myanmar.

Phaholyothin Road in Bangkok is also a demarcation line between districts or sub-districts in several phases as follows:

  1. Thung Phaya Thai (outbound) and Thanon Phaya Thai (inbound) in Ratchathewi district, as a continuation of Phaya Thai Road, from Victory Monument to the bridge over the Khlong Samsen.
  2. Phaya Thai (outbound) and Samsen Nai (inbound) in Phaya Thai district throughout the entire area, from the bridge over the Khlong Samsen to the bridge over the Khlong Bang Sue (begins July 26, 2017).[2]
  3. Chatuchak (outbound) and Chom Phon (inbound) in Chatuchak district from the bridge over the Khlong Bang Sue to Ratchayothin Intersection.
  4. Lat Yao (outbound) and Chan Kasem (inbound) in Chatuchak district from Ratchayothin to Sena Nikhom Intersections.
  5. Lat Yao (outbound) and Sena Nikhom (inbound) in Chatuchak district from Sena Nikhom Junction to Thong Chanya Bridge.
  6. Bang Khen district (outbound) and Sai Mai district (inbound) from the bridge over the Khlong Lam Phak Chi to Saphan Mai quarter.
  7. Don Mueang district (outbound) and Sai Mai district (inbound) from Saphan Mai quarter to the administrative boundary line between Bangkok and Pathum Thani.

See also

Further reading

References
  1. อรณี แน่นหนา, 2002. นามนี้มีที่มา. ประพันธ์สาส์น: กรุงเทพฯ.
    Orani Naenna, 2002. Naam Ni Mi Thi Ma. Praphansarn: Bangkok. (Brief histories of 129 place names in Bangkok.)
  2. "ประกาศกรุงเทพมหานคร เรื่อง เปลี่ยนแปลงพื้นที่แขวงสามเสนใน และตั้งแขวงพญาไท เขตพญาไท" [Bangkok announcement subject: Changing the area of Samsen Nai Subdistrict and established Phaya Thai Subdistrict, Phaya Thai District] (PDF). Royal Thai Government Gazette (in Thai). Archived from the original (PDF) on February 14, 2019.
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