| Public Works Section | To handle issues such as the construction of highways, the implementation of the improvement and construction of the project, and control and assessment. |
| Maintenance Section | To handle the supervision, management, and implementation of highway maintenance plans, and the review, control, and assessment of highway maintenance projects. |
| Production Management Section | To handle issues such as the management of highway land, the acquisition of property right and the maintenance of cadastre, the bidding of financial affairs and labor service as well as the management of vehicle equipment. |
| Planning Section | To handle matters such as new highway construction, engineering measurement, planning and design, improvement of project planning and engineering environmental assessment. |
| Work Safety Section | To handle labor safety, sanitation and environmental protection, the supervision of state compensation cases as well as assessment matters. |
| Office of Accounting | To handle the budget, accounting, and statistics according to the regulations of Statues for Establishment and Management of Budget, Accounting and Statistics Agencies and BAS Personnel. |
| Office of Personnel | To handle personnel management matters according to the regulations of Personnel Management Act. |
| Office of Government Ethics | To handle government ethnics affairs according to the Act of the Establishment and Management of the Government Employee Ethics Units and Officers. |
| Office of Secretariat | Management of documents, seals, cashiers, administration, research, files management, property, and matters that are not part of other offices. |
| Quality Inspection Center | To handle the quality inspection, assessment, and material testing of road construction projects. |
| Traffic Management and Control Center | To handle issues such as highway traffic engineering facilities, traffic investigations, real-time traffic conditions, emergency preparedness for emergency disasters, and data transmission security. |
| Dounan Branch | To handle maintenance and engineering design and construction of provincial highways and other related issues in the northeast of Yunlin County. |
| Shuishang Branch | To handle maintenance and engineering design and construction of provincial highways and other related issues in the southwest of Yunlin County and the west of Chiayi County. |
| Xinying Branch | To handle maintenance and engineering design and construction of provincial highways and other related issues in the northwest of Tainan City. |
| Xinhua Branch | To handle maintenance and engineering design and construction of provincial highways and other related issues in the southwestern part of Tainan City. |
| Zengwun Branch | To handle the maintenance and engineering design and construction of provincial highways and other related issues in the east of Chiayi County and Tainan City. |
| Alishan Branch | To handle the maintenance and engineering design and construction of provincial highways and other related issues in the northeast of Chiayi County. |