Occasionally, rather than make random fixes to problems I see, I’ll use pahighways.com/state to go down signed route numbers (including US and Interstate routes) to “fix” them. For example:

PA 1 - decommissioned; replaced by US 1 - SR 0001 is applied to US 1

So, I do US 1 within the PA state line. Another example:

PA 43 - partly PA Turnpike 43 (SR 7043)

So I do PA Turnpike 43, and the short piece signed as PA 43 (aka the “Demonstration Project”)

This also includes smoothing curves, fixing alignments, immediate vicinity errors on other roads, and of course TIGER and Created By tags.

At least I think that’s what the “diary” is for. :P

EDIT: List of routes affected:

-US 1: SR 0001 (in progress)