<Li> I ‐ 690 in downtown Syracuse </Li> <Li> I ‐ 90 in North Syracuse </Li> <Li> Highway 137 to Highway 401; freeway ends at Canada--US border (Thousand Islands Bridge) </Li> <P> Interstate 81 has six related, auxiliary Interstate highways that that connect the main freeway to downtowns and other cities . I - 381 runs 1.5 miles (2.4 km), connecting Bristol, Virginia to I - 81 . I - 581 is a 6.35 mile long spur that connects Roanoke, Virginia to I - 81 . It is proposed to be overtaken by Interstate 73 . PA 581 connects Harrisburg, Pennsylvania to Interstate 81 . It runs 7.36 miles (11.84 km). I - 481 serves as an eastern bypass of Syracuse, New York . I - 781 extends for 4.9 miles (7.9 km), that connects Fort Drum, New York, to the Interstate . NY 281 is a north--south state highway in central New York in the United States that extends for 16.56 miles (26.65 km) across Cortland and Onondaga counties, roughly paralleling I - 81, and connecting at both ends . </P>

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