By 1899, 3 tracks existed as far north as Mayfair, extended in 1930 to Barrington. At Crystal Lake Jct. is the junction with the McHenry Subdivision, which originally connected with the old Galena Division further south.
CLICK FOR RAILFAN TIPS AND PHOTOS
Radio Frequency - 160.890 (AAR Channel 52) (Chicago-CY)
Radio Frequency - 161.040 (AAR Channel 62) (CY-Harvard)
Direction is northward from Chicago to Harvard
0.2 Lake Street (tower)
0.3 Clinton Street
0.5 Northwest Jct.
2.7 CY (tower/junction)
5.2 Avondale Yard
6.7 IRVING PARK
7.6 Mayfair (CP crossing/remote-CY)
8.7 JEFFERSON PARK
9.7 GLADSTONE PARK
11.1 NORWOOD PARK
12.3 EDISON PARK
13.1 PARK RIDGE
14.6 DEE ROAD
16.7 DES PLAINES
17.3 Deval (UP/CN crossing/remote-CY)
18.5 Seeger (junction-UP/remote-CY)
19.6 MT. PROSPECT
22.4 ARLINGTON HEIGHTS
24.2 ARLINGTON PARK
31.0 End Three Tracks (remote-dispatcher-Omaha)
31.9 CN Crossing (remote-CN dispatcher)
37.0 FOX RIVER GROVE
41.7 PINGREE ROAD
42.5 Crystal Lake Jct. (junction-UP)
42.9 CRYSTAL LAKE
4 tracks from Clinton Street to CY, signaled for both directions with a Controlled Block System.
3 tracks from CY to Mayfair, signaled for both directions with a Controlled Block System.
3 tracks from Mayfair to Barrington signaled for normal left hand operation, center track signaled for both directions with a Controlled Block System.
2 tracks from Barrington to Harvard, signaled for normal left hand operation.
Automatic Train Stop in use between Clinton Street and Harvard.
(Click for diagram of Chicago Terminal*.)
(*The former Chicago & North Western terminal at 500 W. Madison St. has been known by many different names through its history. Including "North Western Station", "Madison Street Station", "Chicago Passenger Station", "Metra Passenger Terminal", and currently "Ogilvie Transportation Center". This lack of a consistent name has resulted in many confused passengers over the years.)