Interstate 66
Interstate 66 (I-66) is a 76.32 mile east–west interstate highway in the eastern United States. The highway runs from an interchange with I-81 near Middletown, Virginia, on its western end to an interchange with U.S. Route 29 (US 29) in Washington, D.C., at the eastern terminus. The route parallels State Route 55 (SR 55) from its western terminus at I-81 to Gainesville, and US 29 from Gainesville to its eastern terminus in Washington. I-66 is unrelated to US 66, which was located in the Midwest-West region of the United States.
Source: Wikipedia
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