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13. Bureau of Legal Affairs 23. Bureau of Highway Construction 1
14. Bureau of Right of Way 24. Bureau of Highway Construction 2
15. Bureau of Mechanical Equipment and 25. Bureau of Road Construction
Communication Administration
16. Bureau of Materials Analysis and 26. Road Construction Centers
Inspection 27. Bureau of Bridge Construction
17. Bureau of Road Research and 28. Bridge Construction Centers
Development 29. Bureau of Highways Maintenance
18. Bureau of International Highways Management
Cooperation 30. Office of Traffic Weight Control
19. Bureau of Highway Standard and 31. Office of Highways 1-18
Evaluation 32. Highway Districts
20. Bureau of Highway Safety 33. Bureau of Location and Design
21. Bureau of Planning 34. Bureau of Highway Landscape
22. Bureau of Environment and Public Architecture
Participation
109 years since its beginning, the Department of Highways has maintained its crucial role in
developing Thailand’s highway infrastructure, constructing and maintaining highways, in order to provide
a complete and comprehensive highway network that links seamlessly with neighboring countries, with
the goal of providing the public with efficiency, speed, and safety. The Department is determined to
continue this mission of creating development and security, for the Kingdom and people of Thailand,
well through the future.
Directors of the Department of Highways
1. Phraya Sawat Worawithi (Mr. Saiyut Sanitwongse), Director of the Department of Ways,
1912 – 1914
2. Phraya Sarasat Sirilak (Sansoen Sukkhayang), Director of the Department of Ways, 1915
– 1917, Chief Engineer, Department of Ways, 1917 – 1927
3. Phraya Sathian Thapanakit (Duang Bunnag), Chief Engineer, Department of Ways, 1927 – 1932.
During 1932 – 1934, the Department was under the supervision of Phra Phisan Sukhumwit
(Prasop Sukhum), who was the Chief of the Department of the City (1932 – 1933), Director of
the Department of Public and Municipal Works (1933 – 1941). During this period there were
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