US101 and Willow Road Interchange Photosimulations CalTrans, San Luis Obispo County, California POITRA Visual provided photo-realistic simulations for the California Department of Transportation (CalTrans) US101 Willow Road Interchange design project. The proposed interchange will provide highway access for an upgraded Willow Road. The interchange will serve existing farm industries and future development in San Luis Obispo County. An interim design called for a new frontage road on the south side of US101 running east from Willow Road. The Interim condition with the proposed frontage road would need to be depicted seperately. The frontage road will remain as part of the final interchange configuration.

POITRA Visual also produced Willow Road Overpass and NB Exit Ramp ground view photosimulations.

2. Aerial Photosimulation of Proposed Interchange: Final configuration featuring the proposed frontage road and the completed interchange and Willow Road.

Photosimulations 2 1 E Mouse-over images above to toggle between the existing photo and the photosimulations.

Visualization simulations were needed for public and agency outreach and for inclusion in environmental documents. The Engineer elected to use a series of photosimulations. POITRA artists plotted the proposed interchange onto an Engineer provided aerial photograph from preliminary design plans. The aerial simulation would aid in communicating the overall design. Using traditional digital painting techniques POITRA added the interchange overpass structure, retaining walls, ramps, and frontage road. Proposed Willow Road was added with laneage, fill and vehicles and Nipoma Creek bridge. Proposed drainage basins were also represented. The frontage road would act as an interim connector before initiation of the interchange project. The frontage road would be constructed with the southern portion of Willow Road. A version of the simulation was created to show this interim condition. The previous bridge and roadway design experience of the POITRA Visual principals always plays a significant role in accurately interpreting and representing the Engineer's design particullarly on interchanges. The final aerial simulation images were used as meeting materials for CalTrans public involvement process and in the final documents.

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