Exit 73 is for Langston Boulevard (US 29) south and the Key Bridge (US 29) north. The portion of I-66 between here and the Capital Beltway (I-495) has a high toll between 3 PM and 7 PM on weekdays in order to reduce the number of vehicles using the road during peak hours and keep traffic moving. There is no toll at other times, and vehicles with three or more occupants are exempt from the toll.

Photos taken December 2025.

Exit 71 is for Glebe Road (VA 120).

Photos taken December 2025.

Exit 69 is for Sycamore Street.

Photos taken December 2025.

Exit 67 is for the Dulles Toll Road (VA 267) west. There is access to the Capital Beltway (I-495) in both directions through this exit. The direct connection to the Capital Beltway (I-495) ahead at exit 64 is southbound only.

Photos taken December 2025.

Exits 66B-A are for Leesburg Pike (VA 7).

Photos taken December 2025.

Exit 64 is for the Capital Beltway (I-495) south.

Photos taken December 2025.

Exits 1A-B are for I-81. Use the right lane for exit 1A to go north or the left lane for exit 1B to go south.

Photos taken May 2016.