SAN FRANCISCO (CBS SF) — Twitter wants to build a sky bridge to connect the two buildings that make up its San Francisco headquarters.

The social networking company says a bridge would save employees time as they move from one building to the other. Workers currently have to go down an elevator, out of one building and into the other, and then up an elevator again to reach the correct floor.

The San Francisco Chronicle reports that the proposal is awaiting review by city officials.

City supervisors approved a tax break three years ago to lure Twitter to the city’s blighted mid-Market neighborhood. It exempts the company from a payroll tax on new hires.

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