I welcome the changes proposed in the article. DC's 695 will be no more and will instead become part of 395 that will now end at DC 295/I-295. The spur route through the 3rd street tunnel is now its own number, I-195, and is meant for local traffic.
The trick to making all of this work is through good signage and hopefully proper use of control cities.
1) See this sign at what will be the future end of I-395:
https://www.google.com/maps/@38.8721785,-76.9900146,3a,75y,150.74h,90.31t/data=!3m6!1e1!3m4!1sLSYeU6V5jiYrYE8Y8aAUXA!2e0!7i16384!8i8192It would be helpful if all of the shields are on one line at the top and then leaving room for control cities.
I-295 SOUTH to 95 495 DC-295 NORTH to 50
National Harbor Baltimore
Alexandria Annapolis
2) This sign at the future southern end of I-195, the left sign should be changed to repace 695 with 395 and to add in the control cities of Anacostia and Baltimore.
https://www.google.com/maps/@38.8848448,-77.0127492,3a,75y,202.17h,90t/data=!3m6!1e1!3m4!1sNiv-cDjs_VczvyrL__UX9Q!2e0!7i16384!8i81923) And, of course, probably the worst sign bridge with regards to confusion:
https://www.google.com/maps/@38.8823739,-77.0186257,3a,75y,102.85h,88.45t/data=!3m6!1e1!3m4!1si9ozz-x0Enr5-VeQ0Ws5Iw!2e0!7i16384!8i8192This needs a total redo. There is just too much information for out of town drivers to understand at high speed. Information overload. I would do this:
EXIT ??? Vertical Clearance
HM395 NORTH to 295 295 C Street S.W.* 195 NORTH
Anacostia US Capitol US Senate
Baltimore The House Union Station
v v v EXIT v ONLY v
<I'd get rid of the sign for S Capitol Street, but leave it at the next sign bridge. The information for all of the different train services at Union Station should either be removed completely or put on a roadside sign, not on the sign bridge. I'd remove the reference to D St NW as that is now an exit for 195 north on the other side of the tunnel. The Union Station wording on this sign is helpful to guide people to the train station and will allow total removal of the sign with all of the train services from the sign bridge.>
* I am not a fan of signing C Street here, as the C street by this exit is closed to traffic (except House members and staff). IMO Washington Ave SW would be better here, as well as any exit for D street SW that exists for those traveling along the SW freeway in the westbound direction. It would mean that both exits would have the same name and it would lessen confusion for those heading to the exits for C street NW or D street NW to reach the Senate office bulidings. I rarely drive by it, but I'm sure the following sign bridge is also confusing:
https://www.google.com/maps/@38.883712,-77.0120596,3a,75y,0.08h,90t/data=!3m6!1e1!3m4!1sLS40AMcFoCuFj2j6YhK26Q!2e0!7i16384!8i8192