I had my directions rotated north for east so I was surprised that I ran into Route 10 on the other side of this connector. I is not the connector I was looking for.
Saturday, May 15, 2021
45.48591666666667, -122.77842777777778
google map 
A little more map study got me turned around after which I headed back to McMillan Park at the east end of the SW 5th Street Connector that had been my intended route.