US 101/46 W & E Interchange

Paso Robles, CA – US 101 is the main travel corridor west of I-5 and along the California coast. State Route 46 (SR 46) is a major east-west corridor handling inter-regional and regional traffic between inland areas and the Central Coast; SR 46 is of critical regional importance for goods movement and tourism. The City of Paso Robles, San Luis Obispo Council of Governments (SLOCOG), and Caltrans desired to plan and construct corridor-wide improvements by addressing the two SR 46 interchanges with US 101 and connecting corridor in separate yet related PSR (Project Study Report), PAED (Project Approval/Environmental Documentation), and final design PS&E (Plans, Specifications and Estimate) packages.

The approved improvements for SR 46 E included interchange and ramp widening modifications, construction of an auxiliary lane, relocated and new ramps, local road/intersection improvements, overcrossing modifications and ramp metering. The approved improvements for the SR 46 W project included design of two dual lane roundabouts at SB and NB ramp termini intersections, realignment of adjacent frontage roads, local road and intersection improvements and bike and pedestrian improvements throughout. Construction phases were identified that made the corridor improvements viable/fundable projects for the project stakeholders.

Jorge Aguilar led the planning/approval, design and construction support efforts for both the interchange projects as Project Manager while employed at Wallace Group and URS. The team delivered the approved PSR’s, the finalized PA/EDs, and the final design PS&E package for the entire U.S. 101/46 E improvements and for the first phase of improvements of the US 101/46 W interchange. Wallace Group’s Landscape Architecture staff prepared construction documents for the US 101 at 46 East project. This project also included the design of new on and off ramps at 16th Street in Paso Robles which is an important entrance for the City. The landscaping was designed to highlight the entrance and provide an attractive setting for a future entry monument. Drought-tolerant plant material and water-efficient irrigation design were provided for long-term durability and regional suitability.

Jorge led the delivery of two complex and innovative projects by successfully navigating through the Caltrans District, Central Region, and Headquarters’ processes to achieve project approvals from planning through construction.

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