Robert M. Gary wrote:

By the time I got there it was 59 minutes before closing and they close
the main gate an hour before closing. So 2 hours of driving all over
the place were wasted. Next time, I'm bringing the laptop with the
built-in GPS and teach my wife to use it.

Say what? The main gate stays open well beyond closing. As a matter
of fact after 4PM the parking lot toll takers depart so you don't
even have to pay.

Sorry about our rather confusing road systems. Theres all sorts of
stupid political reasons. You don't have to ride out the Dulles road
both ways however. Once you make the (quasi improper) pass by the
main terminal you can exit at the first exit (all the airport road
exits FACE the airport, the road is a going-to-from Dulles only
exercise). The museum is three miles or so down Route 28 (which
nobody really calls Sully Road) on the right. Along with another
curiosity that NOBODY has explained to me: the employee entrance
to the airport used to be "GATE 4" but when they built the museum
entrance at the same point it is now Gate 317? Nobody has been
able to explain where 317 comes from. I call it gate 9 3/4 now.