<Table> <Tr> <Th_colspan="2"> <P> </P> U.S. Route 20 </Th> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Th_colspan="2"> Route information </Th> </Tr> <Tr> <Th> Length </Th> <Td> 3,365 mi (5,415 km) </Td> </Tr> <Tr> <Th> Existed </Th> <Td> November 11, 1926--present </Td> </Tr> <Tr> <Th_colspan="2"> Major junctions </Th> </Tr> <Tr> <Th> West end </Th> <Td> US 101 in Newport, OR </Td> </Tr> <Tr> <Th> </Th> <Td> <Ul> <Li> I ‐ 5 at Albany, OR </Li> <Li> I ‐ 15 at Idaho Falls, ID </Li> <Li> I ‐ 25 at Casper, WY </Li> <Li> I ‐ 35 near Williams, IA </Li> <Li> I ‐ 55 near Chicago, IL </Li> <Li> I ‐ 65 / I ‐ 90 in Gary, IN </Li> <Li> I ‐ 75 in Perrysburg, OH </Li> <Li> I ‐ 79 near Erie, PA </Li> <Li> I ‐ 90 near Rensselaer, NY </Li> <Li> I ‐ 95 in Waltham, MA </Li> </Ul> </Td> </Tr> <Tr> <Th> East end </Th> <Td> Route 2 in Boston, MA </Td> </Tr> <Tr> <Th_colspan="2"> Location </Th> </Tr> <Tr> <Th> States </Th> <Td> Oregon, Idaho, Montana, Wyoming, Nebraska, Iowa, Illinois, Indiana, Ohio, Pennsylvania, New York, Massachusetts </Td> </Tr> <Tr> <Th_colspan="2"> </Th> </Tr> <Tr> <Th_colspan="2"> Highway system </Th> </Tr> <Tr> <Td_colspan="2"> <Ul> <Li> United States Numbered Highway System </Li> </Ul> <Ul> <Li> List </Li> <Li> Special </Li> <Li> Divided </Li> <Li> Replaced </Li> </Ul> </Td> </Tr> </Table> <Tr> <Th_colspan="2"> <P> </P> U.S. Route 20 </Th> </Tr>

Where does us route 20 start and end
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