The Bureau of Engineering and our partners are working to complete the Sixth Street Viaduct this Summer. In the meantime, take our new virtual tour and get a sneak peek at the many notable engineering and architectural features that make it so special.
For example, you can also take a closer look at the expansive 10 sets of arches that make up the "Ribbon of Light" design.
Or check out the massive cable structure that supports the bridge in place.
Or stand in the middle of the helix-designed pedestrian and cyclist ramp, located on the north side of the viaduct.
Also, be sure to also view the viaduct’s seismic isolation bearings and see how each arch rests on a concrete Y-shaped base that sits on an isolator made of steel. The entire viaduct is supported by these isolation bearings which limit the amount of shaking from an earthquake by allowing lateral movement of up to 30 inches in any direction. This makes the viaduct one of the largest based-isolated structures in the world and will help the bridge withstand the strongest of earthquakes.
These are just some of the features that make the Sixth Street Viaduct an engineering wonder. 
Enjoy the tour! We look forward to seeing you in person at the viaduct this Summer!