Here's a photo album of construction of the temp bridge - http://tinyurl.com/2epry3. They did NOT use cardboard and chewing gum.

And Here's official word on the overall project = http://tinyurl.com/2dtl52

The old one would've been a century-old this year. The new one is supposed to be done before UA's 18-month expiration MP-balance massacre begins.

Worse would be fighting traffic on Division or Cortland without a temp bridge...