Chaloem Maha Nakhon Expressway ทางพิเศษเฉลิมมหานคร
First Stage Expressway System ระบบทางด่วนขั้นที่ 1
Route information
Maintained by Expressway Authority of Thailand
Length	27.1 km (16.8 mi)
Existed	29 October 1981–present
Din Daeng–Tha Ruea
Length	8.9 km (5.5 mi)
North end	Vibhavadi Rangsit Road / Don Mueang Tollway
Major intersections	Si Rat Expressway
South end	Tha Ruea Junction
Tha Ruea–Bang Na
Length	7.9 km (4.9 mi)
West end	Tha Ruea Junction
Major intersections	Chalong Rat Expressway
East end	Debaratna Road
Tha Ruea–Dao Khanong
Length	10.3 km (6.4 mi)
East end	Tha Ruea Junction
Major intersections	Si Rat Expressway
West end	Rama II Road
Location
Country	Thailand
Highway system
Highways in Thailand Motorways Asian Highways

The Chaloem Maha Nakhon Expressway (Thai: ทางพิเศษเฉลิมมหานคร), also known as the First Stage Expressway System (Thai: ระบบทางด่วนขั้นที่ 1), is an expressway in Thailand, located in Bangkok. It is the first expressway to be opened in the country and 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.^[1]

Din Daeng Interchange

Rama IX Bridge, is part of the Tha Ruea–Dao Khanong expressway section.

History

Due to a significant increase in road traffic in the Bangkok Metropolitan Region, an expressway system was proposed in order to alleviate the heavy ground-level road traffic and in preparation for the predicted increase in car usage. The Expressway Authority of Thailand (EXAT) was tasked to construct Thailand's first expressway in 1978 to connect three main highways leading out of Bangkok to the outlying provinces. This was Vibhavadi Rangsit Road to the north, Debaratna Road to the east and Rama II Road (Thonburi - Pak Tho Road) to the south. A total of 8.51 billion baht was invested in the project, with mainly government funding and some funding from Japan International Cooperation Agency (JICA).^[2]

The first section between Din Daeng–Tha Ruea was completed and unofficially opened on 29 October 1981. It was officially opened on 4 January 1982. Its northern end terminated at Vibhavadi Rangsit Road in Din Daeng district and its southern end terminated at Tha Ruea (Port) Junction near Bangkok Port in Khlong Toei district. The second section between Tha Ruea–Bang Na was opened on 17 January 1983 and connected Tha Ruea Junction to Debaratna Road in Bang Na district. The third section between Tha Ruea–Dao Khanong was opened on 5 December 1987 and connected Tha Ruea Junction to Rama II Road in Chom Thong district.^[3]

Due to increased road traffic on the expressway, Rama IX Bridge was expanded in 2020 and is expected to be completed in 2023.^[4]

According to an official EXAT annual report, the expressway was used by 104,765,797 cars in the 2022 fiscal year, with an average of 302,791 cars per day.^[5]

Route

Kilometre 0 is counted at Din Daeng Interchange.

Chaloem Maha Nakhon Expressway Din Daeng – Tha Ruea
Location	km	Northbound		Facility		Southbound
		Exit destinations (road)	Toll Plaza (Entry)	English	Thai	Toll Plaza (Entry)	Exit destinations (road)
Bangkok	0.00	Sutthisan, Don Mueang (Vibhavadi Rangsit Road)	-	Din Daeng Interchange	แยกดินแดง	Din Daeng	-
		Don Mueang International Airport, Rangsit (Uttaraphimuk Elevated Tollway)				Din Daeng 1
	2.20	Eastbound - Asok, Phra Ram 9, Suvarnabhumi Airport ( Si Rat Expressway)	-	Makkasan Junction	ต่างระดับมักกะสัน	-	Westbound - Victory Monument, Chaeng Watthana, Dao Khanong ( Si Rat Expressway)
	3.70	Pratunam Intersection, Asok-Phetchaburi Intersection (Phetchaburi Road)	-	Phetchaburi Interchange	แยกทางด่วนเพชรบุรี	Phetchaburi	no exit
	4.45	-	Sukhumvit	Phloen Chit Interchange	แยกทางด่วนเพลินจิต	-	North Phloen Chit, Nana, Asok Montri Intersection ( Sukhumvit Road)
							South Phloen Chit, Lumphini Park (Duang Phithak Road)
	6.65	Lumphini (Rama IV Road)	Phra Ram 4-2	Phra Ram 4 Interchange	แยกทางด่วนพระราม 4	Phra Ram 4-1	Khlong Toei (Rama IV Road)
	7.40	Eastbound - Tha Ruea – Bang Na section	-	Tha Ruea Junction	ต่างระดับท่าเรือ	-	Westbound - Tha Ruea – Dao Khanong section
Tha Ruea – Bang Na
Location	km	Eastbound		Facility		Westbound
		Exit destinations (road)	Toll Plaza (Entry)	English	Thai	Toll Plaza (Entry)	Exit destinations (road)
Bangkok	7.40	Northbound - Din Daeng – Tha Ruea section	-	Tha Ruea Junction	ต่างระดับท่าเรือ	-	Westbound - Tha Ruea – Dao Khanong section
	10.75	Sunlakakorn Intersection (Kasem Rat Road)	Tha Ruea 2	Tha Ruea Interchange	แยกทางด่วนท่าเรือ	Tha Ruea 1	Bangkok Port (Kasem Rat Road)
	12.30	At Narong Intersection, Kluai Nam Thai Intersection (At Narong Road)	-	At Narong Interchange	แยกทางด่วนอาจณรงค์	At Narong	-
	14.25	Eastbound - Suvarnabhumi Airport, Bang Phli, Chonburi ( S1 Expressway)	At Narong 1 (from Chalong Rat)	At Narong Junction	ต่างระดับอาจณรงค์	At Narong 2 (to Chalong Rat)	Northbound - Khlong Tan, Phra Ram 9, Ram-inthra ( Chalong Rat Expressway)
						At Narong 3
	15.25	Bang Chak (Sukhumvit 62 Road)	-	Sukhumvit 62 Interchange	แยกทางด่วนสุขุมวิท 62	Sukhumvit 62	-
	17.95	Suvarnabhumi Airport, Bang Phli, Chonburi ( Debaratna Road)	-	Bang Na Interchange	แยกบางนา	Bang Chak (from S1)	-
		Samrong, Samut Prakan, Chonburi ( Sukhumvit Road)	-			Bang Na
Tha Ruea – Dao Khanong
Location	km	Eastbound		Facility		Westbound
		Exit destinations (road)	Toll Plaza (Entry)	English	Thai	Toll Plaza (Entry)	Exit destinations (road)
Bangkok	7.40	Eastbound - Tha Ruea – Bang Na section	-	Tha Ruea Junction	ต่างระดับท่าเรือ	-	Northbound - Din Daeng – Tha Ruea section
	10.50	-	Liap Mae Nam	Mae Nam Interchange	แยกทางด่วนเเม่น้ำ	-	Chong Nonsi, Nang Linchi Road (Rama III Road)
	12.60	Chan Road, Nang Linchi Road (Sathu Pradit Road)	Sathu Pradit 1	Sathu Pradit Interchange	แยกทางด่วนสาธุประดิษฐ์	-	-
	13.55	Northbound - Si Lom, Chaeng Watthana ( Si Rat Expressway)	-	Bang Khlo Junction	ต่างระดับบางโคล่	Sathu Pradit 2	-
	14.97	Rama IX Bridge
	16.55	Bang Pakok (Suk Sawat Road)	Suk Sawat	Suk Sawat Interchange	แยกทางด่วนสุขสวัสดิ์	-	Phra Pradaeng (Suk Sawat Road)
	20.55	-	Dao Khanong	Dao Khanong Interchange	แยกดาวคะนอง	-	Dao Khanong, Samut Sakhon (Rama II Road)
							Bang Pakaeo Intersection (Rama II Road)

See also

• Controlled-access highways in Thailand
• Expressway Authority of Thailand

References