Umgeni Interchange is situated on the National Route 2 (N2) in KwaZulu-Natal. This site is surrounded by private properties, the Transnet pipeline, telecommunication cables, high-voltage electricity powerlines, and the Transnet pipeline. These constraints, together with the extremely high traffic volume on the N2 and other main roads connecting to it, presented major challenges for the engineering survey. The longest and highest ramp of the project, ramp A1 (N2 northbound to Umgeni road East), is an incremental launch bridge standing proudly over yet another incremental launch bridge D1 (Umgeni road westbound to N2 northbound). The project also includes three precast beam and slab bridges, two sections of cast-in-situ deck bridges, and a voided deck slab bridge. Other concrete structures include 750m of cast in-situ box culverts and a reinforced concrete retaining wall. The engineering survey faced further complexities due to the minimal control supplied to us. As a result, we established more pillar beacons and benchmarks in and around the bridge footprint. All the benchmarks were traversed using a Leica total station for XY coordinates and an electronic level for Z values. The setting out of all structures and monitoring of piers during the launch were conducted using Leica robotic total stations.