The next painted intersection on our ongoing tour is Share-It Square, at SE 9th & Sherrett in Sellwood. (The name's a pun, see?) This is Portland's first and oldest painted intersection, dating all the way back to the late '90s. I described a bit of its history in my first post on City Repair intersections, about the one at SE 15th & Alder. Here's the relevant passage, so I don't have to repeat myself:
The first one was Share-It Square, the intersection of SE 9th & Sherrett (hence the name), down in the Sellwood neighborhood. As this was a strange new thing back in 1997, the neighborhood first had to convince the city that painting a lightly used residential intersection wouldn't be the apocalypse. The apocalypse didn't happen, and street graphics have multiplied since then.