30 Jun Union Road/State Route 46 Roundabout (City of Paso Robles)
The intersection at State Route 46/Union Road in Paso Robles is identified as a future grade-separated interchange. Recognizing the need for interim intersection improvements to maintain access and safety, the City oversaw production of a Caltrans PSR (PDS) that examines the potential for an at-grade roundabout to be implemented. As part of a multi-disciplinary team, W-Trans led the roundabout-related analysis and design, including preparation of a roundabout Concept Approval Report (CAR) accepted by Caltrans District 5. The conceptual roundabout design includes elements that reflect the high-speed nature of SR 46, as well as the significant amount of truck traffic using the corridor. Caltrans approved the PSR (PDS) and the City intends to proceed with preparation of a Project Report, the next step in the Caltrans process.