Clusterfuck at SFO

If you drive at SFO, be aware there are now TWO ramps to level 5, depending on the zone. Left ramp goes straight to level 5 as usual, but inner circle is closed (brilliant!) you are forced to enter Zone B and follow the outer path. Right ramp goes into the garage at level 4; not sure how it is routed but assume it eventually emerges for D4 and higher. Anyway, Uber app seems aware and will indicate the ramp to use. More signage would help. Total chaos today as nobody is looking at the nav when they've gone to Level 5 hundreds or thousands of times in the past. I guess this is to help with Terminal 3 construction mess; trying to make Level 5 do everything and so far failing miserably.