GreenWorks created a master plan for the interior Interstate 5 corridor through the City of Tualatin. The first phase of this involved a comprehensive opportunities and constraints analysis, that identified target areas and potential scope of improvements throughout the corridor. This led to the design of a master plan that provides the conceptual view of long-term and short-term landscape improvements, as well as potential costs. The master plan was approved by Tualatin, as well as regional ODOT staff for compliance to recommended plant species and overall maintenance regimes. The master plan provides guidance for future landscape improvements, opportunities for public-private partnerships, and overall consistency of subsequent projects.
The second phase involves the development of a more detailed design of landscape improvements for the Nyberg Road Interchange (phase one). This expansive interchange is currently underutilized and offers the opportunity to become the visible gateway to the City of Tualatin. Design challenges involved working with ODOT for maintenance access and planting apporpriateness made easy through pre-review of the master plan in the first project phase. Since the majority of users for the interchange are in fast traveling vehicles, we developed 3D modeling and photomontage design solutions to represent the user experience at speed. This greatly improved the overall communication of design intent. After developing and refining a number of possible solutions with the project team, including Tualatin and review by ODOT, a preferred alternative was created, and construction documents were prepared.