 He says that contractors are actively working to get that done. So August 1st is our official start date, and that's based off of the usual time frame for turnaround on the railroad's permitting process. When construction does begin, he says there will be some changes to pedestrian walkways and access to the bridge, and there will be closures to the landmark. The center of the universe itself will generally be off limits just so that the contractor has safe working space.