It was investigated that two arch tunnel was frozen in the winter. In recent years, winter is getting longer than the past. It need for measures to prevent an icicle occurrence in two arch tunnel due to abnormal climate changes.

• 김낙영(한국도로공사 수석연구원, 공학박사) | Kim, Nag Young 교신저자
• 곽종수(한국도로공사 건설지원팀, 팀장) | Kwak, Jong Su
• 안희준(한국도로공사 건설지원팀, 차장) | Ahn, Hee Jun
• 김병구(한국도로공사 구조물관리팀, 차장) | Kim, Byung-Gu