<Tr> <Th> Status </Th> <Td> Open </Td> </Tr> <Tr> <Th> Navigation authority </Th> <Td> Waterways Ireland </Td> </Tr> <Tr> <Th_colspan="2"> History </Th> </Tr> <Tr> <Th> Construction began </Th> <Td> 1790 </Td> </Tr>

Where does the royal canal cross the m50