The Chalong Rat Expressway () is an expressway in Thailand, located in Bangkok. It is 27.1 kilometres in length. The expressway has played an important role in alleviating ground-level road traffic in Bangkok. The expressway is a controlled-access toll road.
History Due to a significant increase in road traffic on the Chaloem Maha Nakhon Expressway and heavy ground-level road traffic on the Lat Phrao, Phra Ram 9 and Ram Inthra roads, an expressway was proposed in order to alleviate this. The Expressway Authority of Thailand (EXAT) was tasked to construct this expressway, of which the first section between was opened Ram Inthra–At Narong on 6 October 1996. This connected Ram Inthra Road with the Chaloem Maha Nakhon Expressway at At Narong Junction. The second section between Ram Inthra–Outer Ring Road (East) was opened on 23 March 2009 and connected Ram Inthra Road with Outer Ring Road (East), or Kanchanaphisek Road.
According to an official EXAT annual report, the expressway was used by 70,559,374 cars in the 2022 fiscal year, with an average of 193,314 cars per day.
In July 2024, a planned extension, EXAT moved forward with the northern expansion of the Chalong Rat Expressway, awarding the Chatu Chot–Lam Luk Ka extension contract to Italianthai Development. The project, valued at ฿18.70 billion, involves building an elevated link to connect the current terminus with Pathum Thani.
The construction is scheduled to take about three years. ITD secured the project by narrowly outbidding other major firms including Ch. Karnchang, Sino-Thai, and Unique Engineering. This 16.2-kilometer segment serves as the initial phase of the expressway's eventual reach toward Nakhon Nayok and Saraburi.
Route
Kilometre 0 is counted at At Narong Junction. Chalong Rat ExpresswayAt Narong – Ram InthraLocationkmNorthboundFacilitySouthboundExit destinations (road)Toll Plaza (Entry)EnglishThaiToll Plaza (Entry)Exit destinations (road)Bangkok0.00Westbound - Tha Ruea, Dao Khanong ( S1 Expressway)At Narong 2 (from Chaloem Maha Nakhon)At Narong Junctionต่างระดับอาจณรงค์At Narong 1 (from Chaloem Maha Nakhon)Eastbound - Bang Na ( Chaloem Maha Nakhon Expressway)no toll plazaEastbound - Bang Na, Burapha Withi Expressway ( S1 Expressway)1.10 -Phra KhanongSukhumvit 50 Interchangeแยกทางด่วนสุขุมวิท 50 -Sukhumvit 50 Road, On Nut, Paknam Railway Road (Sukhumvit 50 Road)4.72Khlong Tan (Phatthanakan Road)Phatthanakan 2Phatthanakan Interchangeแยกทางด่วนพัฒนาการPhatthanakan 1Hua Mak (Phatthanakan Road)6.70Eastbound - Srinagarindra Road, Suvarnabhumi Airport ( Si Rat Expressway)Phra Ram 9-1 (From Si Rat)Ramkhamhaeng Junctionต่างระดับรามคำแหงPhra Ram 9-1 (To Si Rat)Westbound - Din Daeng, Chaeng Watthana ( Si Rat Expressway)8.49Pracha Uthit, Phra Ram 9 Road (Pradit Manutham Road)Phra Ram 9-2Pracha Uthit Interchangeแยกทางด่วนประชาอุทิศPracha UthitPhra Ram 9 Road, Ekkamai (Pradit Manutham Road)10.81 -Lat PhraoLat Phrao Interchangeแยกทางด่วนลาดพร้าว -Chokchai 4, Bang Kapi (Lat Phrao Road)15.65Lat Pla Khao, Kasetsart University, Nawamin Road ( Prasert Manukit Road) -Yothin Phatthana Interchangeแยกทางด่วนโยธินพัฒนาYothin Phatthana -18.72Lak Si ( Ram Inthra Road)Ram Inthra 1Ram Inthra / Watcharaphon Interchangeแยกทางด่วนรามอินทรา/วัชรพลRam InthraMin Buri ( Ram Inthra Road)Ram Inthra – Outer Ring Road (East)LocationkmNorthboundFacilitySouthboundExit destinations (road)Toll Plaza (Entry)EnglishThaiToll Plaza (Entry)Exit destinations (road)Bangkok18.72Lak Si ( Ram Inthra Road)Ram Inthra 1Ram Inthra / Watcharaphon Interchangeแยกทางด่วนรามอินทรา/วัชรพลRam InthraMin Buri ( Ram Inthra Road)22.85Sai Mai (Sukhaphiban 5 Road)Sukhaphiban 5-2Sukhaphiban 5 Interchangeแยกทางด่วนสุขาภิบาล 5Sukhaphiban 5-1Watcharaphon Intersection (Sukhaphiban 5 Road)27.90Lam Luk Ka, Bang Pa-in ( Kanchanaphisek) -Chatuchot Junctionต่างระดับจตุโชติChatuchotBang Phli ( Kanchanaphisek)
See also
Controlled-access highways in Thailand Expressway Authority of Thailand
References