SR120 over McKinley Avenue Photosimulations 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. The existing overpass structures were to remain with additional structures to carry interchange access ramps placed on either side. The existing fill slope paving needed to be truncated in order to widen McKinley Avenue. The new ramp structures incorporated standard side slopes to the outside to help preserve the open appearence.

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

1. Photosimulation of Proposed Overpass: New single span ramp structures with truncated slopes on the existing bridges and standard side slopes on the proposed.

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

The driver eye view of the overpass was intended to illustrate the details of the new structures and the reconfiguration of the existing. 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 superstructures, abutments, wing walls and side slopes. The model was then aligned to the perspective of the Engineer provided base photograph. The models were appropriately lighted, rendered and composited with the base photograph. The simulation was finished using traditional digital painting methods. 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. « BACK

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