I'm guessing work should wrap up in the next couple months. Both sides of 540 are now open to traffic, though only one lane in each direction. New signs seems to be going up quickly, but cable barriers are still going up. There appear to be acceleration/decelleration lanes at each exitthat I don't recall seeing in the past (or not as extensive).
The ramp from NB 540 to WB 40 is still being rebuilt, so that area is a pain in the @$$.
NB 540 has more route markers, but are all the "neutered" variety. SB 540 has more route markers and they are all "named" shields.
I'll have some photos on my
Flickr page on the next day or so as soon as I can go through them.