and it is perhaps the single most unforgiving interchange I've ever seen in that if you miss your ramp, you have to go on to the next interchange and turn around to try again (no easy way to correct a mistake in Springfield).
I'd argue that the Wilson Bridge is a worse offender for this. For a semi-related example, I had one commute home (from Suitland to Huntington) where the local lanes were closed due to a jumper threat, so they forced everyone onto the express lanes. But because the Eisenhower Connector interchange was closed for the reconstruction and Mill Rd hadn't opened yet, I had to go all the way down to Van Dorn St when my "normal" exit is Route 1.
Fair argument, but the Wilson Bridge isn't really an "interchange," so I'll stand by my original comment that Springfield is the most unforgiving INTERCHANGE I've seen. If I were referring to roads in general I might have cited the Pennsylvania Turnpike due to the long gaps between interchanges. (I haven't driven the portion of Florida's Turnpike between Fort Pierce and Orlando and so it's not one "I've seen.")
I must agree with Adam on this one - no, the Wilson Bridge is not (and was not) an
interchange, but the terribly substandard interchanges at Va. 243 in Fairfax County; U.S. 1 in Alexandria; I-295 in Prince George's County and Md. 210 were (to varying degrees) out-dated and obsolete 1960's interchanges (the one at U.S. 1 probably being the worst of the bunch).
Correcting yourself at any of the interchanges that were rebuilt as part of the Wilson Bridge project is no easy task even if they are all open, though, because none of them lets you "ride the ramps" (e.g., a "cloverleaf U-turn") and some of them require somewhat convoluted routing to turn around. The best example of the latter that comes readily to mind is if you mistakenly take the Outer Loop THRU lanes when you wanted I-295. You can exit to MD-210, but the process of getting back to the Inner Loop is quite involved and requires looping around past the new outlet mall, through a few lights, and then around a couple of loop-around ramps.
(Edited to correct a typo)
I agree with you that making a mistake in terms of a missed exit at the WWB interchanges can lead to a long detour.
But - the rebuilt WWB and its approaches
do accomplish something we could use a lot more of - they (hopefully) separate trips by trip length, with the shorter, local trips in the LOCAL lanes, and the longer trips in the THRU lanes. That is something that planners yearn for in both freeway and transit system design.