 Route of Highway 403 as it appeared in 1997, before the three discontinuous sections were united. Base Map Courtesy of Queen's Printer for Ontario - © 1990 Alterations & Additions by Josh Anderchek - © 2003-2010 |
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 Route of Highway 403 as it appears today Map Courtesy of Bing Maps (Retrieved August 16, 2010) - Link to this map at Bing Maps |
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