Chalong Rat Expressway

The Chalong Rat Expressway (ทางพิเศษฉลองรัช) 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.

The expressway is planned to extend to Nakhon Nayok and Saraburi provinces in the future.

Route
Kilometre 0 is counted at At Narong Junction.