<Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (June 2012) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (June 2012) (Learn how and when to remove this template message) </Td> </Tr> <Table> <Tr> <Th_colspan="2"> <P> </P> National Road </Th> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Th_colspan="2"> Route information </Th> </Tr> <Tr> <Th> Existed </Th> <Td> 1811--present </Td> </Tr> <Tr> <Th_colspan="2"> Major junctions </Th> </Tr> <Tr> <Th> East end </Th> <Td> Cumberland, Maryland </Td> </Tr> <Tr> <Th> West end </Th> <Td> Vandalia, Illinois </Td> </Tr> </Table> <Tr> <Th_colspan="2"> <P> </P> National Road </Th> </Tr>

Where does the national road begin and end
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