I think this is an excellent idea.

I’m a relatively active mapper from Pittsburgh, and I’ve cleaned up a few whole state routes and significant portions of others. I did the entirety of PA 18, clear from Erie to the border with West Virignia. I also cleaned up all of PA 51 and 68. Partial routes I did include US 30 from PA’s western border to Pittsburgh International Airport, US 422 from Armstrong to the western border, and US 119 from Point Marion in the south almost to Punxatawney.

I’m glad you’re interested in our roads because they desperately need work, especially out in rural areas. Good luck; I hope you finish eventually.

As someone who lives in and maps the Pittsburgh area, I agree with this proposed mechanical edit. Strangely, there are very few of these mistagged refs around where I live; most of them are in central and eastern PA.