Credit for right-of-way dedication. For any zoning lot included within the College District that has any frontage along Half Day Road (Illinois Route 22), to the extent that any land from such lot is dedicated or otherwise conveyed for right-of-way purposes for Half Day Road, the Half Day Road lot line(s) for such lot shall be deemed to be the lot line(s) as existing on September 22, 2008. The prededication lot area and dimensions of such lot shall be applied for purposes of calculating lot area, setbacks, building coverage, and lot coverage requirements; provided, however, that this provision shall not apply to any zoning lot from which additional right-of-way has been taken, dedicated, or otherwise conveyed beyond the right-of-way lines set forth in the Illinois Department of Transportation Plats of Highway for Illinois Route 22, consisting of 16 pages, and dated September 22, 2008.