Unassigned Maryland Route Numbers
These numbers, as far as I know, have never been assigned as Maryland state route numbers. The list doesn't include decommissioned route numbers. It doesn't mean they've never existed, just that I don't have anything about them in assorted plans and maps from the 40s to today. Some may have been secret routes for just a year or two, while an adjacent construction project was underway.

This is the 'Most Wanted' list, so please mail me if you know anything about the whereabouts of these missing Maryland route numbers. Grayed-out numbers have since been found.

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