| Country: | THA |
| Maint: | Expressway Authority of Thailand |
| Length Km: | 28.2 |
| Chalong Rat Expressway ทางพิเศษฉลองรัช | |
| Direction A1: | North |
| Direction B1: | South |
| Terminus A1: | Ram Inthra Road (Ram Inthra Interchange) |
| Junctions1: | Chaloem Maha Nakhon Expressway, S1 Expressway |
| Section1: | At Narong–Ram Inthra |
| Established: | 6 October 1996 |
| Terminus B1: | At Narong Junction |
| Section2: | Ram Inthra–Outer Ring Road (West) |
| Length Km1: | 18.7 |
| Length Km2: | 9.5 |
| Direction A2: | North |
| Direction B2: | South |
| Terminus A2: | Outer Ring Road (East) (Kanchanaphisek Road) |
| Terminus B2: | Ram Inthra Road (Ram Inthra Interchange) |
| Junctions2: | Si Rat Expressway |
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.[1]
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.[2]
The expressway is planned to extend to Nakhon Nayok and Saraburi provinces in the future.[3]
Kilometre 0 is counted at At Narong Junction.
| Chalong Rat Expressway At Narong – Ram Inthra | |||||||
| Location | km | Northbound | Facility | Southbound | |||
| Exit destinations (road) | Toll Plaza (Entry) | English | Thai | Toll Plaza (Entry) | Exit destinations (road) | ||
| Bangkok | 0.00 | Westbound - Tha Ruea, Dao Khanong (S1 Expressway) | At Narong 2(from Chaloem Maha Nakhon) | At Narong Junction | ต่างระดับอาจณรงค์ | At Narong 1(from Chaloem Maha Nakhon) | Eastbound - Bang Na (Chaloem Maha Nakhon Expressway) |
| no toll plaza | Eastbound - Bang Na, Burapha Withi Expressway (S1 Expressway) | ||||||
| 1.10 | - | Phra Khanong | Sukhumvit 50 Interchange | แยกทางด่วนสุขุมวิท 50 | - | Sukhumvit 50 Road, On Nut, Paknam Railway Road (Sukhumvit 50 Road) | |
| 4.72 | Khlong Tan (Phatthanakan Road) | Phatthanakan 2 | Phatthanakan Interchange | แยกทางด่วนพัฒนาการ | Phatthanakan 1 | Hua Mak (Phatthanakan Road) | |
| 6.70 | Eastbound - Srinagarindra Road, Suvarnabhumi Airport (Si Rat Expressway) | Phra Ram 9-1(From Si Rat) | Ramkhamhaeng Junction | ต่างระดับรามคำแหง | Phra Ram 9-1(To Si Rat) | Westbound - Din Daeng, Chaeng Watthana (Si Rat Expressway) | |
| 8.49 | Pracha Uthit, Phra Ram 9 Road (Pradit Manutham Road) | Phra Ram 9-2 | Pracha Uthit Interchange | แยกทางด่วนประชาอุทิศ | Pracha Uthit | Phra Ram 9 Road, Ekkamai (Pradit Manutham Road) | |
| 10.81 | - | Lat Phrao | Lat Phrao Interchange | แยกทางด่วนลาดพร้าว | - | Chokchai 4, Bang Kapi (Lat Phrao Road) | |
| 15.65 | Lat Pla Khao, Kasetsart University, Nawamin Road (Prasert Manukit Road) | - | Yothin Phatthana Interchange | แยกทางด่วนโยธินพัฒนา | Yothin Phatthana | - | |
| 18.72 | Lak Si (Ram Inthra Road) | Ram Inthra 1 | Ram Inthra / Watcharaphon Interchange | แยกทางด่วนรามอินทรา/วัชรพล | Ram Inthra | Min Buri (Ram Inthra Road) | |
| Ram Inthra – Outer Ring Road (East) | |||||||
| Location | km | Northbound | Facility | Southbound | |||
| Exit destinations (road) | Toll Plaza (Entry) | English | Thai | Toll Plaza (Entry) | Exit destinations (road) | ||
| Bangkok | 18.72 | Lak Si (Ram Inthra Road) | Ram Inthra 1 | Ram Inthra / Watcharaphon Interchange | แยกทางด่วนรามอินทรา/วัชรพล | Ram Inthra | Min Buri (Ram Inthra Road) |
| 22.85 | Sai Mai (Sukhaphiban 5 Road) | Sukhaphiban 5-2 | Sukhaphiban 5 Interchange | แยกทางด่วนสุขาภิบาล 5 | Sukhaphiban 5-1 | Watcharaphon Intersection (Sukhaphiban 5 Road) | |
| 27.90 | Lam Luk Ka, Bang Pa-in (Kanchanaphisek) | - | Chatuchot Junction | ต่างระดับจตุโชติ | Chatuchot | Bang Phli (Kanchanaphisek) | |