Longest tunnel.

Japan Ambassador to the Philippines Kazuya Endo and Department of Public Works and Highways (DPWH) Senior Undersecretary Emil Sadain inspect on Jan. 27, 2025 the ongoing road mountain tunnel component of the Davao City Bypass Construction Project, a flagship infrastructure initiative aimed at alleviating traffic congestion and significantly enhancing connectivity across Davao City and neighboring areas. The project is financed in part by Japan International Cooperation Agency (JICA), which continues to play a vital role in supporting the Philippines’ infrastructure ambitions.