Driving Directions From Maryland - North via I-495

Coming from the north (Maryland) on 495.  At Tyson’s Corner take Exit 12 - Dulles Toll Road/Route 267 (a right lane exit).  Pay toll (75 cents).

Continue approximately 11 miles and take Exit 9B, Route 28 North/Sully Road . (This is the last exit before the airport.)

Go through the toll booth (50 cents).

Proceed approximately 5 miles. Route 28 connects (and ends) at Route 7.

Follow signs to Leesburg - West (a left exit).

As you come off the ramp onto Route 7 stay in the right lane.

Go approximately ½ mile and take the ramp exit to Route 607 North.

From the Route 7 ramp make a right onto Route 607 North.

Proceed to the stop sign.

Turn right onto George Washington Blvd.

Continue along George Washington Blvd. for ½ mile and take a left on Riverside Parkway .

The NTSB Training Center is on the left side of the road. It is a large brick red complex of two attached buildings. The address is 45065 Riverside Parkway, Ashburn, Virginia.