First opened in 1981, the system currently (2015) consists of seven expressways and four expressway links adding up to a total distance of , unchanged since FY2012. The constituent expressway systems are (in order of completion): •
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 •
Si Rat–Outer Ring Road Expressway ==Financials==