This project included a Single-Point Urban Interchange design where all traffic movements are initiated at one large intersection controlled by one traffic signal. When the traffic signal turns green, opposing traffic moves quickly through the intersection. Surveying and engineering for an intersection where all traffic movements are aligned to intersect at a single point is complicated and the elevated structure required for McEwen created an even greater deal of geometric complexity. Each freeway exit and entry ramp approaches and crosses the bridge with curved alignments. Construction stakes, lines and grades were also required for sidewalk plazas that include landscape planters, colored and stamped concrete, decorative metal pedestrian railings and 19th century-style lighting fixtures.
