NS 8377 leads this westbound intermodal across Rockville Bridge today. Canon 10D and 70-200mm lens, 1/750 second exposure, f8.0, F.L. 120mm, ISO 100.

Another view of the westbound Pennsylvanian on Sunday. Canon 10D and 70-200mm lens, 1/500 second exposure, f9.5, F.L. 70mm, ISO 100.

NS 5520 approaches the signals at the west end of the bridge. Canon 10D and 70-200mm lens, 1/750 second exposure, f9.5, F.L. 70mm, ISO 100.

The little engine that could, this ex-PRR/CR GP40-2 heads across the river to Harrisburg, left to right in the photo. Canon 10D and 70-200mm lens, 1/750 second exposure, f9.5, F.L. 105mm, ISO 10... (more)

This photo dramatically illustrates the extent of the ice cover on the Susquehanna River. Canon 10D and 70-200mm lens, 1/750 second exposure, f9.5, F.L. 93mm, ISO 100.

Amtrak's the Pennsylvanian heads west across the Rock today. Canon 10D and 70-200mm lens, 1/500 second exposure, f9.5, F.L. 70mm, ISO 100.

A kaleidoscope of color, as a solitary SD60I in Conrail blue leads an intermodal east across the frozen Susquehanna River today. The sun had set behind North Mountain a few minutes before.

Screener:Sort of looks like a vintage slide.

The setting sun illuminates the mountain above Rockville Bridge as the Three Rivers heads west.

Curiously, this three engine consist, with the FURX 7246 SD40-2 leading, went a quarter of a way across the bridge, stopped, then reversed and was gone. I later saw them arrive at Enola yard.

Another view of NS 9431 as it approaches the west end of the bridge. Canon 10D and 70-200mm lens, 1/500 second exposure, f6.7, F.L. 100mm, ISO 100.

NS 9431 leads this westbound intermodal across the Rock this afternoon. Canon 10D and 70-200mm lens, 1/500 second exposure, f6.7, F.L. 175mm, ISO 100.

A mallard points the way for westbound 9534 in the fading evening sun. Canon 10D and 70-200mm lens, 1/180 second exposure, f6.7, F.L. 155mm, ISO 100.

This is the eastbound Pennsylvanian at 5:52 P.M. yesterday. The interior lights from the passenger coaches cast a shimmering glow on the Susquehanna River below. Thirty second exposure at f11.

The Aurora Borealis glows as an eastbound freight crosses the Rock. My profound thanks to Chris Starnes for his advice and assistance in re-processing my photo.