This track is the old New York Central mainline that stretches between New York City and Buffalo NY, and was a four track main for most of the trip in the old days.  But as you can clearly see, down in the Corfu set, only two tracks survive in most places.

A cantilever bridge adjacent to CSX's Frontier yard off Broadway St (NY 130), just west of I90.

Corfu NY

Near Corfu NY at mp 413 is this bridge, typical of them all along this line.

Depew NY

These pictures were taken from the Depew Amtrak station.  1 - 6 are looking east.... the proceed in pictures 4 & 5 is for the Amtrak train in 3.  Picture 6 shows you how the signals go dark after the train has passed, or is not in the following block, whether approaching or going away from you.  7 - 9 are looking west, and 10 - 13 are close-ups of the far bridge were looking at in 7-9.  Pictures 7 - 8 - 9 show several different aspects before and after an Amtrak train went thru and the switches got lined up for the next move.  This is a very good railfan spot, and the Amtrak people do not bother you while on the platform as they do in places (for instance) like on the Northeast Corridor.

1   2   3   4   5   6

7   8   9   10   11    12   13

  This map is from Stephen Titchenal, and is from his website: http://www.railsandtrails.com/Maps/Buffalo/

I also found this railfan guide to Buffalo, but there doesn't seem to be much on it: http://www.buffalotrains.com/

I came across this article dated Sep 5th, 2009: http://www.buffalonews.com/145/story/641363.html

Bordentown NJ

The track between Camden and Trenton New Jersey is used by both CSX and the NJT's River Light Rail line.  Colorlights signals are used exclusively.  Here's a few cantilever type signal bridges south of Bordentown.  Some of the shots are at Dulty's Lane, including the crossing gate.  The far signals in the right picture are at Neck Rd, where CSX has a small yard, shown on the bottom row of pix.

Clifton VA

Located halfway between Fairfax and Manassas VA, is this quaint little spot called Clifton - located here is a double track signal bridge on the former Southern Railway (now NS).

     
The signal bridge pictured here is on the east side of Clifton VA, with great morning sun, as this photo was taken around 9am, I believe this is the eastbound Crescent.

 
They even have a general store still standing and N&W caboose # 518590 sits next to the tracks.

Mike Turner of South Carolina informs me that this signal bridge was made of Southern Railway boxcar sills. Of the two construction styles I know about, mostly welded and mostly riveted, the photos show one mostly riveted. The mostly welded version has smaller gussets as the diagonal member. The mostly riveted style has the longer diagonals. Traincat has a model that's a good starting point for this style bridge.  Thanks for the info, that's good stuff!

Gastonia NC

This classic signal bridge in Gastonia is located just off interstate 85 at exit 19, Ozark Ave.  South from 85, Ozark turns into Long, keep going south to Rhyne St and take a left, and another left at the tracks, go north along the tracks till you can't go 'no further.