Driving Directions from Airports to Northbound I-270
Take the Dulles access road (the only exit from the airport) and exit onto I-495 (Capital Beltway) north toward Baltimore. Follow I-495 to I-270 North (toward Frederick). Continue on I-270 for approximately 15 miles... (Continue to Step 2, below >>)
Exit from the airport to the George Washington Memorial Parkway (GW Parkway). Follow the GW Parkway toward Maryland to I-495 North. Once on I-495 North, merge into left lanes and exit at I-270 North toward Frederick. Continue on I-270 for approximately 15 miles... (Continue to Step 2, below >>)
Follow signs to Washington, DC from airport or satellite parking lots. Proceed to I-95 South toward Washington. Take I-495 (Capital Beltway) West toward Rockville and follow signs to I-270 North (about 10 miles). Continue on I-270 North for approximately 15 miles... (Continue to Step 2, below >>)
From I-270 Northbound
From I-270 northbound take Exit 13A (Middlebrook Road East). Move immediately into the far left lane and turn left at the first traffic light onto Observation Drive. Turn left onto Exploration Lane.
From I-270 southbound there is no exit at Middlebrook Road. You must exit onto Rt. 118 East and turn right at Rt. 355 South. Turn right onto Middlebrook Road. At first light, turn right onto Observation Drive and then turn left onto Exploration Lane.
From I-270 northbound take Exit 11, Montgomery Village Ave. Merge onto Montgomery Village Ave. from ramp, cross Rt. 355 (Frederick Ave.). Turn right at next light, Russell Ave. Make the first right into the parking lot.
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