In 2015, the City of Saskatoon began an important journey to upgrade the existing 1960s cloverleaf interchange at the junction of Highway 11 and Highway 16 in southern Saskatoon. Serving traffic from both the Yellowhead Highway and Circle Drive (the City’s ring road), the interchange is nearing the end of its functional lifespan and has long been identified as a priority for improvement to relieve significant daily congestion, delays to goods movements and citizens, reduce collisions caused by stop and go and short weave conditions, and unnecessary emissions. Additionally, due to substandard 4.7 m vertical clearance under the overpass, high trucks collide with the structure on a regular basis. Refer to Figure 1 for the study area and Figure 2 for the existing interchange configuration.