St. Louis BTS Station (English: Saint Louis Station, code S4) is a sky train station on the 6th Cycle Birthday Anniversary BTS route. (BTS SkyTrain) Silom Line, which straddles above the Sathorn Canal North Sathorn-South Sathorn Road in the area of Bang Rak and Sathorn Bangkok It is another station located in the heart of the business district on Sathorn Road. Opened on February 8, 2021, it was considered the first additional BTS station in Thailand. built on the line of electric trains that are currently open for service St. Louis Station was originally classified as a future station that was not built in the past. But station codes have been set up for fare calculation for 21 years.