That's because Related Cos. is preparing to begin raising the decking over the Hudson train yards that will support their Hudson Yards towers.

WSJ: Option Preserved for Another Tunnel Under Hudson River

The proposal would extend the existing decking out over the innermost vehicle travel lanes, preserving the same space for car traffic and adding new width for bikes and walkers.

WSJ: Bridge Traffic On Walkway Stirs Concern

The bright yellow canopy has been erected over decking outside the Piazza Cafe on the Penglais campus.

BBC: The canopy outside the Piazza Cafe