Kanchanaphisek Road (), also known as the Bangkok Outer Ring Road () is a highway in Thailand, connecting Bangkok, Samut Prakan province, Nonthaburi province, Pathum Thani province and Phra Nakhon Si Ayutthaya province. It consists of multiple sections, including a controlled-access toll road, and almost forms a complete loop around the Bangkok Metropolitan Area.
History Due to the rapid economic development of Bangkok which resulted in a significant increase in road traffic, the Bangkok Outer Ring Road was conceived in 1978 as a bypass route to connect the major highways leading out of the capital city. Its construction was separated into sections due to the high costs involved in the project, with the West section being the first to be constructed, followed by the East section and the South section. The Department of Highways initially designated the highway as Highway 39, but it was changed to Highway 9 after the Master Plan of Intercity Motorways (แผนพัฒนาระบบทางหลวงพิเศษระหว่างเมือง) was drawn up in 1996. In the same year, the road's name was bestowed upon by King Bhumibol Adulyadej following the Golden Jubilee celebrations, 'Kanchanaphisek Road', meaning 'Golden Jubilee Road'.
The Department of Highways maintains West and East Kanchanaphisek Road, while the Expressway Authority of Thailand maintains the South Kanchanaphisek Road.
Route East Kanchanaphisek Road (Motorway 9) The eastern section was completed in 1998 as a four-lane intercity motorway with toll collection. This was expanded to 6-8 road lanes in 2010 to handle the increased traffic after the opening of Suvarnabhumi Airport. On 15 February 2022, it was the first highway which the Department of Highways introduced the multi-lane free flow system (M-flow) to reduce congestion at the toll gates. As of April 2023, approximately 110,000 cars use the system daily.
West Kanchanaphisek Road This was the first section to be constructed in 1978, between Taling Chan district, Bangkok and Bang Bua Thong district, Nonthaburi, as part of Highway 340 to Suphan Buri. This section was later extended to Bang Pa-in district, Phra Nakhon Si Ayutthaya in 1995. The section between Taling Chan district with Bang Khun Thian district was completed in 1998. South Kanchanaphisek Road The southern section was the final section to be constructed and is a controlled-access toll highway, divides into 2 parts
The Suksawat-Bang Khun Thian continues from Kanchanaphisek Expressway at Bang Khru Interchange then passes through Bang Khun Thian in Bangkok then ends at Rama II Road.
Toll collection was extended to the Suk Sawat - Bang Khun Thian section on 20 May 2019. Kanchanaphisek Bridge, the southernmost river crossing of the Chao Phraya River is part of the highway.
The Kanchanaphisek Expressway (Bang Phli - Suksawat Expressway) is located entirely in Samut Prakan province, Stretching over 21 kilometres.
The Route started in Wat Salut Interchange at kilometre 0 and passes Theparak Road, Srinagarindra Road, Sukhumvit Road the crosses the Chao Phraya River via Kanchanapisek Bridge and ends at Suksawat Road.
It opened for trial use on 15 November 2007 and toll collection between Bang Phli - Suk Sawat began on 23 March 2009.
According to an official EXAT annual report, the expressway was used by 79,603,350 cars in the 2022 fiscal year, with an average of 225,505 cars per day.
List of Facilities
Kanchanaphisek Expressway (Bang Phli - Suksawat Expressway) Kanchanaphisek ExpresswayLocationkmNorthboundFacilitySouthboundExit destinations (road)Toll Plaza (Entry)EnglishThaiToll Plaza (Entry)Exit destinations (road)Samut Prakan0.00Suvarnabhumi Airport, Chonburi ( Burapha Withi Expressway, Debaratna Road) -Wat Salut Interchangeต่างระดับวัดสลุดBang Kaeo -Bang Na, At Narong ( Burapha Withi Expressway, Debaratna Road)5.29Bang Phli ( Thepharak Road)ThepharakThepharak Interchangeต่างระดับเทพารักษ์ThepharakSamrong ( Thepharak Road)10.82Samut Prakan (Srinagarindra Road)Bang MueangBang Mueang Interchangeต่างระดับบางเมืองBang MueangBang Kapi (Srinagarindra Road)14.62Samut Prakan ( Sukhumvit Road)Pak NamSukhumvit Interchangeต่างระดับสุขุมวิทPak NamSamrong ( Sukhumvit Road)18.90Pu Chao Saming Phrai RoadPu Chao Saming PhraiBhumibol Bridge Interchangeต่างระดับสะพานภูมิพลPu Chao Saming Phrai -Rama III Road (via Bhumibol Bridge)20.30Kanchanaphisek Bridge21.10Phra Pradaeng, Rat Burana ( Suk Sawat Road)Bang KhruBang Khru Interchangeต่างระดับบางครุBang KhruPhra Samut Chedi, Chulachomklao Fort ( Suk Sawat Road)Bangkok36.66 -Bang Khun ThianBang Khun Thian Interchangeต่างระดับบางขุนเทียน -Bang Pakaeo Intersection, ( Rama II Road)Samut Sakhon ( Rama II Road)
Rapid transit Outer Ring Road - Ram Inthra MRT station of Pink Line is located near the intersection where Kanchanaphisek meets Ram Inthra Road. Talad Bang Yai MRT station and Khlong Bang Phai MRT station of Purple Line are located directly above the road. Lak Song MRT station of Blue Line is located near the intersection where Kanchanaphisek meets Phet Kasem Road.
See also
Controlled-access highways in Thailand Expressway Authority of Thailand
References
The article contains content from the corresponding article in the Thai wikipedia.