The Tuen Mun-Chek Lap Kok Link (TMCLKL) project in Hong Kong aimed to enhance road connectivity by linking critical destinations such as the Hong Kong Boundary Crossing Facilities, the Hong Kong – Zhuhai – Macao Bridge, and the International Airport. Golder Associates Hong Kong spearheaded the geotechnical design and analysis for dual tunnels in the challenging southern landfall of the BCF reclamation area. In the face of intricate ground conditions encompassing fill, soft marine deposits, alluvium, decomposed granite, and rock, they meticulously engineered segmental tunnel linings beneath the southern landfall, taking into account recent reclamation effects and residual settlement to ensure a robust design.