<Table> Eisenhower--Johnson Memorial Tunnel <Tr> <Td_colspan="2"> Eisenhower Tunnel </Td> </Tr> <Tr> <Th_colspan="2"> Overview </Th> </Tr> <Tr> <Th> Location </Th> <Td> Approx. 60 mi (97 km) west of Denver, Colorado </Td> </Tr> <Tr> <Th> Coordinates </Th> <Td> 39 ° 40 ′ 43" N 105 ° 55 ′ 12" W ﻿ / ﻿ 39.6785 ° N 105.92 ° W ﻿ / 39.6785; - 105.92 Coordinates: 39 ° 40 ′ 43" N 105 ° 55 ′ 12" W ﻿ / ﻿ 39.6785 ° N 105.92 ° W ﻿ / 39.6785; - 105.92 </Td> </Tr> <Tr> <Th> Route </Th> <Td> I - 70 </Td> </Tr> <Tr> <Th> Crosses </Th> <Td> Continental Divide </Td> </Tr> <Tr> <Th_colspan="2"> Operation </Th> </Tr> <Tr> <Th> Opened </Th> <Td> 1973 (westbound) 1979 (eastbound) </Td> </Tr> <Tr> <Th> Operator </Th> <Td> Colorado Department of Transportation </Td> </Tr> <Tr> <Th> Character </Th> <Td> Twin - bore tunnel </Td> </Tr> <Tr> <Th> Vehicles per day </Th> <Td> 32,260 vehicles (2007) </Td> </Tr> <Tr> <Th_colspan="2"> Technical </Th> </Tr> <Tr> <Th> Length </Th> <Td> 1.693 mi (2.72 km) westbound 1.697 mi (2.73 km) eastbound </Td> </Tr> <Tr> <Th> Highest elevation </Th> <Td> 11,158 ft (3,401 m) west portal </Td> </Tr> <Tr> <Th> Lowest elevation </Th> <Td> 11,013 ft (3,357 m) east portal </Td> </Tr> <Tr> <Th> Tunnel clearance </Th> <Td> 13.92 ft (4.24 m) </Td> </Tr> <Tr> <Th> Width </Th> <Td> 40 ft (12.2 m) each </Td> </Tr> <Tr> <Th> Grade </Th> <Td> 1.64% </Td> </Tr> </Table> <Tr> <Td_colspan="2"> Eisenhower Tunnel </Td> </Tr> <Tr> <Th_colspan="2"> Overview </Th> </Tr> <Tr> <Th> Location </Th> <Td> Approx. 60 mi (97 km) west of Denver, Colorado </Td> </Tr>

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