SR120 and McKinley Avenue WB Ramps Photosimulation CalTrans, Manteca, California POITRA Visual was selected to provided design visualization services to the California Department of Transportation (CalTrans) and the City of Manteca to illustrate the proposed SR120 and McKinley Avenue Interchange. The design upgraded the existing overpass to a full interchange and widened McKinley Avenue. POITRA created several simulations for the project including an aerial view, eastbound and westbound ramp views and an overpass view. Ground level views from the existing SR120 Shoulders were intended to show the interplay of the intersecting fill slopes from the various ramps. The right-of-way needed for the proposed interchange ramps and the widening of McKinley required property takes in the immediate area. These views would also help visualize the effects of these changes.

An aerial view photosimulation of the SR120 and McKinley Avenue Interchange was also produced by POITRA Visual.

1. Photosimulation of Proposed Interchange Ramps: New WB SR120 ramps featuring the ramp roadway profiles and the intersecting fill slopes with affected properties revised.

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

A simulation was created for both westbound and eastbound SR120. Photo-simulation was the medium chosen as the easiest to understand and most realistic means to present the new design to the public. POITRA created a partial 3D computer model of the interchange with proposed bridge structures, ramp roadways and fill slopes. The model was then aligned to the perspective of the Engineer provided base photographs. The models were rendered and composited with the base photograph. The buildings, trees and utility poles affected by the project were removed. The background elements exposed by these removals were restored. This work was accomplished using traditional digital painting techniques. POITRA relied upon the past bridge and highway design experience of its principals to interpret the Engineer's plans and to ensure the accuracy of the finished simulation. The final images were used in internal California Department of Transportation (CalTrans) and City of Manteca design sessions and for public outreach programs.

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