The robots.txt file of Oregon.gov is somewhat suspicious. There seem to be lots of hidden executable files as well as pages with GET queries.
Because of the amount, I would guess some of the executable files lead to web shells. I am less sure of, but still somewhat confident, that the open GET queries might be pages where someone has discovered a SQL injection flaw.
They are likely trying to prevent these pages from appearing on Google where a regular user might notice. Will try to look shortly on desktop and update further.