WPssst has a nice interview with Rich Golinowski, VP/Manager of IAD: https://www.washingtonpost.com/trans...irport-future/

including these bits on replacing C/D:Q:At 60, is Dulles starting to show its age?

A: Yes, it is. We’re starting to see some problems in some of our older buildings and we’re addressing those. Obviously, over the past couple of years, we’ve tried to control our budget as much as we could, but now that things are starting to look up, we’re starting to free up some money for maintenance for some of our older infrastructure.

Q:There’s been some big news out of Dulles recently. Can you tell me more about the 14-gate concourse and what it’s going to mean for travelers?

A: If you’re familiar with the C/D concourse — that’s the United Concourse — when that was built, it was built as a “temporary facility.” Well, it’s been around for 20 or 30 years now. We always had intentions to replace it, so this piece that’s coming, Concourse East, will be the first phase of the revitalization of Dulles Airport. It’s going to be a 14-gate addition that’s going to be built right on top of the C train station. If you’re familiar with this train station today, when you go in and you come out of the train, you have a long walk back to the gate. The new concourse will be built right on top of that train station, so you’ll just pop right up through escalators and elevators right into the concourse.

Q: How long will this take to complete?

A: We hope to have it done by 2026.

Q: How does this fit into the larger master plan for Dulles?

A: After we build this concourse we will then extend it across the airfield over time and ultimately replace the C/D concourse. Right now we are going through the planning process to identify the best way to do that. If you think of it today, it would be one large concourse, parallel to the C/D concourse we have today.

Q: How can the public get involved in the planning process for Dulles?

A: We are going to have a series of public participation venues or events, where people can come and see what our preliminary plan is and what our long-term plan is. The first one was held on April 27 and we are getting ready to schedule the next one or two of those public sessions. People can also go to the website and submit questions or concerns or comments about our master plan. It’s also important to note that the last time we did a master plan was in 1985. So the existing plan is 37 years old and it needs to be updated.