Hi Edthebikeguy, Welcome to OSM! I noticed in this change set you removed a trail that does seem to exist. 

If you check out some street side photos from that bridge you can see the trail heading into the woods. If you look at the "Portland Maps Aerial Photo Lastest" Background layer in the editor, you can see the trail continuing into the forest. 

Also looks like there is a good amount of heatmap data showing people are using this trail, and also another trail that is going over to the canoe launch to the north
https://i.imgur.com/iAulgJG.png

You might want to restore this trail until you can take a better look on the ground. I see no reason why the heatmap would show so much activity if this trail really didn't exist. Thanks