Hmm, thats a cool concept.  Neat shot too!
  | 
 
| Posted by Steve on May 8, 2007  |  |   
They do the 'temporary diamond' next to the California State Railroad Museum in Sacramento too.
  | 
 
Steve, I have seen photos of that. However, this crossing is permanent and fully automatic. I'll dig out a photo of it in the up position.
  | 
 
Found some more shots for anyone that is interested. They are here:
http://gallery.qrig.org/v/users/rowie/Drawbridge+Crossings/
  | 
 
  |