My aunt had a house on the south end of Duluth until about 1990. To the west of her house about 2 blocks was a DW&P line and yard. I looked on google earth and found the line but not the yard. Does any of it still exist?
No. In Duluth the DW&P used a long trestle to access various points around the city.
The trestle was abandoned in November 1984 and later dismantled. Basically nothing remains today.
In the 1980s the Minnesota Department of Transportation built the DW&P a new yard at Pokegama, in Superior, WI to replace their old West Duluth yard which was in the way of the I35 project.