Interstate 66
interstate highway in the United States
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.[1]
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| Route information | |
| Length | 76.28 mi[1] (122.76 km) |
| Major junctions | |
| West end |  I‑81 in Middletown, VA |
  US 340 / US 522 near Front Royal, VA US 17 near Warrenton, VA US 15 in Haymarket, VA SR 234 in Bristow, VA US 50 near Fairfax, VA I‑495 in Dunn Loring, VA SR 267 near Falls Church, VA | |
| East end |  US 29 in Washington, D.C. |
| Highway system | |
