Expressway Authority of Thailand
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The Expressway Authority of Thailand (Thai: การทางพิเศษแห่งประเทศไทย) is a state enterprise under the Ministry of Transport. It was founded in 1972, and operates Thailand's expressway (ทางพิเศษ Thang Phiset) system, which comprises (usually elevated) high-capacity controlled-access highways serving the Greater Bangkok area and some nearby provinces. First opened to service in 1981, the system currently consists of seven completed sub-systems completed adding up to a total distance of 207.9 kilometres (129.2 mi).[1]
The constituent expressway systems are (in order of completion):[2]
- Chaloem Maha Nakhon Expressway (First Stage Expressway System)
- Si Rat Expressway (Second Stage Expressway System)
- Chalong Rat Expressway (Ramindra – At Narong Expressway)
- Burapha Withi Expressway (Bang Na Expressway)
- Udon Ratthaya Expressway (Bang Pa-in – Pak Kret Expressway)
- Third stage expressway System, S1 section (At Narong - Bang Na)
- Bang Phli – Suk Sawat Expressway (South Kanchanaphisek ring road)
- Ramindra – Outer Ring Road Expressway