From Washington Dulles International Airport

1. Start out going West on Dulles Airport Access Rd.
2. Take the VA-267-TOLL West exit toward Leesburg. (toll).
3. Take the US-15 N/VA-7 E exit 1B toward Frederick MD.
4. Follow US-15 BYP N through Virginia and into Maryland. US-15 will become US-15N./Rt 340 past Point of Rocks. Continue on US-15 N through Frederick.
5. Take the MOTTER AVE Exit.
6. Turn right onto OPOSSUMTOWN PIKE.
7. Turn right onto THOMAS JOHNSON DR
8. EDCO is approx 1 mile on the right side.

From Ronald Reagan Washington National Airport

1. From the terminal, take the ramp towards GEORGE WASHINGTON MEMORIAL PARKWAY North.
2. Take the I-495 N exit towards Maryland.
3. Take the I-270 exit – exit 38 on the left towards ROCKVILLE/FREDERICK.
4. Follow I-270 N to Frederick.
5. I-270 N becomes US-15.
6. Stay straight on US-15 N.
7. Take the MOTTER AVE Exit.
8. Turn right onto OPOSSUMTOWN PIKE.
9. Turn right onto THOMAS JOHNSON DR
10. EDCO is approx 1 mile on the right side.
    

From Baltimore / Washington International Airport

1. From the BWI terminal, take I-195 W
2. Take the MD-295 S/Balt/Wash Pkwy exit - exit 2B towards BALTIMORE.
3. Merge onto MD-295 N and follow
4. At the Baltimore Beltway take Rt I-695 NW towards Towson
5. Take I-70 West toward Frederick.
6. Take the US-15 exit 53 onto US-15 N FREDERICK/GETTYSBURG.
7. Stay on US-15 N
8. Take the MOTTER AVE Exit.
9. Turn Right onto OPOSSUMTOWN PIKE.
10. Turn RIGHT onto THOMAS JOHNSON DR
11. EDCO is approx 1 mile on the right side.