SR 243 heads north as a six-lane divided highway through a cloverleaf interchange with I-66 just east of the Vienna station of the Washington Metro, which is the western terminus of the Orange Line that runs in the median of the Interstate from Vienna east to Arlington.
SR 243, a six-lane divided highway, passes through a cloverleaf interchange with I-66 just east of the Vienna station on the Washington Metro, which is the western terminus of the Orange Line that runs in the median of the Interstate from Vienna to Arlington.