The numbers on the top of the diagram are C&NW mileposts. The thin lines across the tracks are passages or bridges under the tracks, except for the Soo Line bridge over the C&NW at 14.75. The depot PT subway is the tunnel to the outbound platform, closed and used for storage in the 1960s but open now. There is a stairway from the platform down to Thatcher that the commuters on the few weekday-only trains that stopped there in the 1960s used. The P.T. Subway at 14.7 (Park Avenue) is a pedestrian tunnel because the dip for the Soo Line bridge made the track level too low for a street bridge. All of the bridges were and are low, the ones at Keystone and Thatcher flooding regularly after heavy rains. The thicker lines are signal bridges, equipped with horizontal three-light signals in the 1960s.eolesen wrote:Here's a track diagram from 1959. You can see the former stations penciled in. Too wide to include here, but you can click thru to it.
https://c1.staticflickr.com/5/4159/3462 ... cd9d_b.jpg
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