This tunnel was a pedestrian undercrossing designed to connect the Temple’s newly constructed subterranean basement to the Conference Center garage. The site was located in a highly trafficked downtown thoroughfare and required preconstruction preparation to analyze various risks with 3^rd party entities that included utilities, the transportation department, and property owners to mitigate potential ground settlement during tunnel construction. The project required ample communication and collaboration to ensure the expectations were met, including both operational and aesthetic objectives. Drill Tech designed the tunnel shape and support, utilizing open face mechanical excavation through the loose alluvial deposits of cemented sands and cobbles. Waterproofing and shotcrete final liner were installed at the transition between the tunnel and existing facilities from both ends.