Originally Posted by scubadiver
For your convienence, the folks at IAD have replaced the short walk from security to the mobile lounge gates with a long walk. It looks like all flights are now from the mid-field terminals. Used to be that puddle-jumpers left from A in the main terminal. Now the A/B concourse is used as the death march to the mobile lounges.
A few "puddle-jumpers" still leave from the T gates in the main terminal (the A gates were never in the main terminal). Those remaining T gates will be demolished within a month or so. New T gates (east side of the control tower) are under construction, but won't be in service for some time yet.
The A gates will be entirely Independence Air by the end of August. United Express flights will be leaving from various C, D and (mostly) G gates.