Interstate 66

Not to be confused with U.S. Route 66.

Route information
Length	76.28 mi (122.76 km)
Major junctions
West end	in Middletown, VA
Major intersections	near Front Royal, VA near Warrenton, VA in Haymarket, VA in Bristow, VA near Fairfax, VA in Dunn Loring, VA near Falls Church, VA
East end	in Washington, D.C.
Highway system
Interstate Highway System Main Auxiliary Suffixed Business Future

Interstate 66 is an Interstate Highway in the United States. It goes from Middletown, Virginia east to Washington, D.C.. The route is 76.28 miles (122.76 km) long.

Interstate 66 Media

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  Western terminus of I-66 at the interchange with I-81 in Middletown, Virginia

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  I-66 in Oakton, with a Washington Metro train using the tracks in the median

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  The E Street Expressway just east of I-66

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  I-66 in Fairfax County with the Metrorail Orange Line in the median. The left lane is an HOV lane, and the right shoulder is used as a travel lane during rush hour; both lanes were widened as part of the Transform 66 project.

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  I-66 at Scott Street in Arlington County

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  I-66 westbound in Rosslyn

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  I-66 eastbound past the U.S. Route 29 in Centreville, Virginia

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  The eastern terminus of I-66 at U.S. Route 29 in Washington, D.C.

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  The Potomac River Freeway (I-66) in Washington, D.C.

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  A map of I-66, showing cities and interchanges with I-81 and I-495