| | Subcommittee Name | Chairperson | Liaison Secretary |
| 1 | Subcommittee on Promoting Continuing Education for Steel Structures (Ongoing) | Katsuo Ogaki | Mayuko Nishio |
| 2 | General Subcommittee on Standard Specifications for Steel and Composite Structures (Standing) | Kazuo Tateishi | Yusuke Sato |
| 3 | Subcommittee on International Exchange (Ongoing) | Takashi Matsumoto | Yasunori Miyamori |
| 4 | Subcommittee on the Update and Utilization of Data on Historic Steel Bridges (Ongoing) | Kazufumi Nakamura | Yusuke Kobayashi |
| 5 | Subcommittee on Standard Specifications for Steel and Composite Structures: General Provisions and Design | Hironori Ishii | Yasuhiro Miyazaki |
| 6 | Subcommittee on Standard Specifications for Steel and Composite Structures: Seismic Design | TBD | Yusuke Sato |
| 7 | Subcommittee on Standard Specifications for Steel and Composite Structures: Construction | TBD | TBD |
| 8 | Subcommittee on Standard Specifications for Steel and Composite Structures: Maintenance and Management | TBD | TBD |
| 9 | Subcommittee on Surface Preparation for Steel Structures | Shigenobu Kainuma | Keigo Suzuki |
| 10 | Subcommittee on Sustainability of Steel Structures | Kazuyuki Mizuguchi | Masakazu Takeno |
| 11 | Subcommittee on Technical Exchange for Young Engineers in Steel Structures | Masashi Hattori | Takashi Yamaguchi
Toshihiro Kasugai |
| 12 | Subcommittee on Skill Standards for Steel Structures | Takashi Yamaguchi | Kentaro Arimura |
| 13 | Subcommittee on Maintenance and Design Methods for Road Bridge Deck Slabs | Keigo Kubo | Yoshinori Danshita |
| 14 | Subcommittee on Advanced Application of Nondestructive Testing Technologies for Steel Structures | Daijiro Nagasawa | Masafumi Hattori |
| 15 | Subcommittee on Rationalizing Verification Methods for the Design and Construction of Steel Structure Erection | TBD | Yoshinori Dangashita |
