CTA's 6000 series cars are seen at Ashland & 63rd on the Green Line in Englewood.

CTA's 6000 series cars are seen at Quincy & Wells during a photo stop during Jon Zupko's retirement charter after 44 years of service.

A Metra commuter train passes under a original PRR signal with the city skyline back drop.

Metra's CB&Q heritage engine is seen heading into downtown Chicago as it passes the Amtrak's 14th Street Yard.

The eastbound California Zephyr is seen passing through the Little Village neighborhood of Chicago running just over 16hrs late with UP 7222 leading the way.

In a view from Roosevelt Road overpass, Metra MP36PH-3S No. 402 powers a Metra commuter train at Chicago, Illinois, on April 17, 2009.

Starting the day from Chicago Union Station, CSX's P001 is seen passing through the bascule bridges spanning the Chicago Sanitary & Ship Canal about 100ft north of Ash Street interlocking.

The Phase II heritage unit is seen leading the eastbound Capitol Limited out of Chicago in a blended double exposure (1/100 flash and 1/4 timed) taken from 18th Street.

Metra 98 leads a outbound train through CP Morgan in Chicago.

UP Y728 shows another Metra trainset from the California Ave Coach Yard down to Ogilvie as the A2 flame throwers continue doing their job.

GMTX 78 is seen working Befesa Zinc just north of CRL's Irondale Yard in the South Deering neighborhood of Chicago.

IHB 1524 is seen coming off the Hammond Connection to the SC&S River Line after departing from Burnham Yard in the Hegewisch neighborhood on the south side of Chicago.

Bridge 710, which has been out of service for more than a decade, looms in the background as CN train L512 is seen spotting cars at the Port of Chicago.

BRC's South Chicago Job is seen setting out its train at the east end of BRC's South Chicago Yard with the typical pair of CITX SD40-2s.

AMTK 153 passes over the South Branch of the Chicago River traversing a most impressive lift bridge. The train in taking head room for a shove move back towards Union Station.