[1] Virginia:
Because I-66 is the only major highway running west from Washington, D.C., into Northern Virginia, traffic on the road is often extremely heavy. For d...
[2] District of Columbia:
In Washington D.C., I-66 follows the West Leg of the Inner Loop freeway. After crossing the Potomac River on the Theodore Roosevelt Bridge concurrent ...
Interstate 66 Descriptions - iTravel.mobi
