<Table> <Tr> <Th_colspan="2"> <P> </P> Interstate 77 </Th> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Th_colspan="2"> Route information </Th> </Tr> <Tr> <Td_colspan="2"> Maintained by West Virginia Division of Highways and West Virginia Parkways Authority </Td> </Tr> <Tr> <Th> Length </Th> <Td> 187.21 mi (301.29 km) </Td> </Tr> <Tr> <Th> Existed </Th> <Td> November 8, 1954--present </Td> </Tr> <Tr> <Th_colspan="2"> Major junctions </Th> </Tr> <Tr> <Th> South end </Th> <Td> I - 77 / US 52 at Virginia state line </Td> </Tr> <Tr> <Th> </Th> <Td> US 460 near Princeton I ‐ 64 from Beckley to Charleston WV 16 / WV 97 at Beckley US 19 near Beckley US 60 at Charleston I ‐ 79 near Charleston US 33 from Ripley to Ravenswood WV 2 from Ravenswood to Parkersburg US 50 at Parkersburg </Td> </Tr> <Tr> <Th> North end </Th> <Td> I - 77 at Ohio state line </Td> </Tr> <Tr> <Th_colspan="2"> Highway system </Th> </Tr> <Tr> <Td_colspan="2"> <Ul> <Li> Interstate Highway System </Li> </Ul> <Ul> <Li> Main </Li> <Li> Auxiliary </Li> <Li> Suffixed </Li> <Li> Business </Li> <Li> Future </Li> </Ul> <Ul> <Li> West Virginia State Highway System </Li> </Ul> <Ul> <Li> Interstate </Li> <Li> US </Li> <Li> State </Li> </Ul> <Table> <Tr> <Td> ← WV 76 </Td> <Td> </Td> <Td> WV 78 → </Td> </Tr> </Table> </Td> </Tr> </Table> <Tr> <Th_colspan="2"> <P> </P> Interstate 77 </Th> </Tr>

When was interstate 77 built in west virginia