With a few exceptions, you can pay CoA citations online. They still tack on costs, which is horribly annoying.
As for the geography issue, you're probably fighting a losing battle. You can go on the ticket's return date, plead not guilty, and get the ticket set for a hearing. The officer probably won't be at that first hearing. At the second hearing, you can point out that the intersection doesn't exist and that the ticket is facially deficient and should be tossed because the officer is unreliable, etc. You'll probably lose. Certain issues, I think mostly dates & times, will void a ticket. But generally, a citation is only a statement of probable cause where the officer saying "I inadvertently wrote 'drive' instead of 'blvd,' but I observed the offense at the time and location" will still result in a fine.
I've never fought a citation, even when it was wrongful, mostly because it isn't worth the time to go down to municipal court twice and the issue will turn on credibility. I'm an officer of the court and still suspect the judge would take the cop's word over mine even though we have the same duty of candor and honesty.