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Now that Laurel is open, there are more options for skipping this charger as well.
I wouldn't say Woodbridge is easy to get to either. Depends a lot on time of day - that whole Springfield/Woodbridge area is pretty consistently dreadful.
Woodbridge is "bad" because Tesla navigation tells you to take Prince William Parkway and Telegraph Road, which adds 10-20 minutes round-trip. Going southbound, the charger is 3-5 minutes from the freeway via the Dale City exit, and going northbound the freeway is 3-5 minutes from the charger using the Opitz Blvd entrance ramp. Gideon Drive is usually pretty tame.
Super-congested times are rare on these routes. Woodbridge is a far better option than Laurel in almost any circumstance.
pg 8 post 145 shows there is only room for one more supercharger for five total. That would allow two more pedestals to be added without a major re-do... just add two pedestals to make a total of 10.
Your photo shows the 5th supercharger which is indeed slightly different from the other four. All new supercharger are of this type.
They must be adding two more charging pedestals. Great!
I was there yesterday afternoon and 2 of the current stalls were blocked by the fenced area and 1 stall ICEd by the pick up truck of the crew. So only 5 stalls available and all occupied.