Spanning one hundred feet above a pedestrian alley, this Skybridge completes the vision of a fully interconnected urban campus for Twitter within the two buildings of the historic San Francisco Furniture Mart. The 35-foot-long passageway creates nearly 100,000 square feet of contiguous office space on a single floor. The bridge connects two distinct spaces; on one end is a double-height main dining hall and all-hands space, and on the other are two floors of specialty dining. By connecting these collective amenities, the new Skybridge provides opportunities for employees to intermingle as they move between the two buildings and fosters a greater sense of community within the company.
The volume of the Skybridge is strategically shaped in response to a series of site-driven constraints. Since the ninth floors of the two buildings differ in elevation by nearly 5 feet, a ramp slopes downward to mediate the difference in floor height. Similarly, the roofline stretches upward to connect to a tenth-floor overlook establishing a visual connection between all of the dining spaces. In plan, the bridge tapers as it crosses to the newer building to accommodate slight differences in the column grids between the buildings.
On the exterior, standard curtainwall extrusions have been modified to accept layered sheets of frameless glass, resulting in ever-changing patterns of shadow and reflection. On the bridge’s underbelly, silver aluminum panels are shingled in correspondence with the curtainwall to create a textured “third façade” when viewed from below. Together, the shingled faces of the building envelope add a layer of delicacy to the sculptural volume of the bridge. In the daytime, the tiled glass reflects the colors and changing hues of the sky. At dusk, the Skybridge is softly illuminated, glowing as an urban lantern.
Credits: Eckersley O'Callaghan & Ptrs, LLC, Aurora Development, The Fire Consultants, Murphy Burr Curry, WSP USA, Hathaway Dinwiddie Construction Company