A unique 7-ft-deep triangular cross-section for the typical span was developed to optimize superstructure quantities. To assist the stability of the streamlined structure, external diaphragms at the ends of the span provide a wider bearing spacing. The diaphragm components were integrated with the pier shapes that flare at the top and narrow down to a standard prismatic section. The result was a sleek, narrow guideway structure that significantly reduced material quantities compared to traditional box girder designs. The reduced mass of the superstructure also greatly reduced seismic demands allowing for slender column design with reduced substructure and foundation cost. Also, the inclined webs of the V-shaped box girder give a less intrusive appearance to the guideway by reducing its visual mass.

The guideway is post-tensioned with hybrid external and internal tendons. At intermediate points along the span the post-tensioning transitions from external at the anchorages to internal in the bottom slab near midspan. This design feature enhanced seismic performance, reduced the depth of the structure, and decreased the post-tensioning quantities.

The variable soils and close proximity to surrounding structures made foundation design a critical part of the overall project. A wide range of foundation types were used, including traditional spread footings, CIDH piles, driven piles and large diameter drilled shafts. Also included were spread footings with tie-downs, which were the key to employing spread footings in locations where adjacent structures did not allow a large footprint. Similarly, the use of 10-ft-diameter drilled shafts in many areas allowed construction to take place along a narrow right-of-way.