| 2025 |
Changwon Tunnel Operation and Management |
Changwon Special City |
| 2021 |
Operation and Management of Gyeryong Tunnel and 3 Facilities on National Route 1 (2021-2023) |
Nonsan Office of National Land Management |
| 2021 |
Operation and Management of Inje Hangye Tunnel (Upper) and 16 Facilities |
Gangneung Office of National Land Management |
| 2020 |
Tunnel Operation and Management for Changwon Branch and 2 Facilities (2020-2022) |
Korea Expressway Corporation |
| 2020 |
Tunnel Operation and Management for Chungju and Boeun Branches (2020-2022) |
Korea Expressway Corporation |
| 2020 |
Tunnel Operation and Management for Yangsan Branch (2020-2022) |
Korea Expressway Corporation |
| 2020 |
Operation and Management of Inje Hangye Tunnel (Upper) and 16 Facilities on National Route 46 (Phase 1) |
Gangneung Office of National Land Management |
| 2020 |
Operation and Management of Gangdong Tunnel and 2 Facilities on National Route 20 (2020-2022) |
Pohang Office of National Land Management |
| 2020 |
Integrated Management of Palgongsan Tunnel Management Center |
Gyeongsangbuk-do |
| 2020 |
Consigned Tunnel Operation and Management of Jincheon Tunnel and 9 Facilities on National Route 17 (2020-2021) |
Hongcheon Office of National Land Management |
| 2020 |
Operation and Management of Hwacheon Tunnel and 5 Facilities on National Route 7 (2020-2021) |
Pohang Office of National Land Management |
| 2020 |
Operation and Management of Eoeul 3 Tunnel and 6 Facilities on National Route 43 |
Nonsan Office of National Land Management |
| 2020 |
Deongneung Tunnel Operation and Management |
Namyangju City Hall |
| 2020 |
Operation and Management of Yangjeong Tunnel and 3 Facilities on National Route 14 |
Jinju Office of National Land Management |
| 2020 |
Jungnyeong Tunnel Operation and Management |
Korea Expressway Corporation Daegu-Gyeongbuk Headquarters |
| 2020 |
Tunnel Operation and Management of Jangheung Tunnel (Upper) and 4 Facilities on National Route 39 |
Uijeongbu Office of National Land Management |
