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Spur route from Interstate 81 into Roanoke, Virginia. About 6 miles long, co-signed with U.S. 220 for its entire length. If the central route for Interstate 73 is chosen, this highway will become I-73.

One slightly strange thing about this road is that the limited-access highway continues past where I-581 technically ends. 220 remains limited-access for about a mile past the "END 581" sign.

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