Dated November 27, 2018 History of Sisaket Highway District 1, Highway Office 9, Ubon Ratchathani Department of Highways Background Originally named Sisaket Highway District, established in 1970. The office was located at Km. 0+120 on the left side of Highway No. 221, Sisaket-Kantharalak (currently under the responsibility of Sisaket Municipality). It had a total area of ​​31 rai, 1 ngan, and 53 square wah. The initial area of ​​responsibility included a total of 433.710 kilometers and 7 subordinate highway maintenance sections (now renamed highway maintenance sections), namely: Kantharalak Highway Maintenance Section Phrai Bueng Highway Maintenance Section Dong Bang Highway Maintenance Section Huai Khla Highway Maintenance Section Khukhan Highway Maintenance Section Som Poi Noi Highway Maintenance Section Rasi Salai Highway Section Year 2001 The Department of Highways issued Order No. J.1.9/10/2534 dated November 6, 2001, concerning the establishment of Ubon Ratchathani Highway Maintenance Office No. 2 (Det Udom), instructing the highway district to transfer road sections and highway maintenance units to Ubon Ratchathani Highway Maintenance Office No. 2 (Det Udom). Furthermore, Department of Highways Order No. J.1.9/1/2535 dated February 10, 1992, determined the distance and work volume under the responsibility of highway offices located in the Northeastern region. This resulted in a total distance of 748.891 km, comprising 6 highway maintenance units: Tha Tum Highway Maintenance Unit Khukhan Highway Maintenance Unit Sisaket Highway Maintenance Unit Uthumphorn Phisai Highway Section Sikhoraphum Highway Section Buachet Highway Section Year 2004 The Department of Highways issued Order No. J.1.9/17/2547 dated September 14, 2004, for the benefit of the government and in accordance with the government's policy of integrated provincial administration and to maximize benefits for the public and society as a whole, transferred road sections and highway sections to the Surin Highway District. This resulted in an area of ​​responsibility for 470.451 kilometers of road, with 492.094 kilometers of two-lane roads, comprising four highway sections: Sisaket Highway Section Uthumphorn Phisai Highway Section Rasi Salai Highway Section Khukhan Highway Section Year 2014 New highway sections were established according to the Department of Highways Order No. J.1.9/2/2557 dated July 18, 2014, for the benefit of the government. To ensure efficient maintenance of highways under the jurisdiction of Highway Office 7, and to create a suitable network for managing road maintenance work by the road maintenance districts/offices, thereby benefiting public service, the following five road maintenance sections were established: Sisaket Road Maintenance Section Uthumphorn Phisai Road Maintenance Section Rasi Salai Road Maintenance Section Khukhan Road Maintenance Section 5. Phu Sing Road Maintenance Section Year 2015: - The name of the Highway Office was changed according to the Department of Highways Order No. J.1.9/5/2558 dated February 18, 2015, to ensure continuity, efficiency, and effectiveness in the department's administration, from Highway Office 7 (Ubon Ratchathani) to Highway Office 9 (Ubon Ratchathani). - Highway districts were established by changing the name of the road maintenance districts. According to the Department of Highways Order No. J.1.9/7/2558 dated February 26, 2015, the Sisaket Highway District was renamed Sisaket Highway District 1. - The names of the road maintenance sections were changed according to the Department of Highways Order No. J.1.9/14/2558 dated April 23, 2015, from "Road Maintenance Section" to "Highway Section" as follows: Sisaket Highway Section Uthumphorn Phisai Highway Section Rasi Salai Highway Section Khukhan Highway Section Phu Sing Highway Section Year 2017 - Sisaket Highway District 1 has a controlled road length of 524.050 km, with a length of 619.730 km per two lanes. It is divided into 5 road maintenance sections: Sisaket Highway Section Uthumphorn Phisai Highway Section Rasi Salai Highway Section Khukhan Highway Section Phu Sing Highway Section