My understanding is that I-95 will be widened to 6 lanes from Bristol (Exit 40/PA 413) northward to the proposed connection with the PA Turnpike/I-276. From there to PA 332, I-95 (future I-195) will likely remain as a 4-laner.
The project website has a page with a zoomable diagram of this segment. It shows the planned lane configuration there.www.paturnpikei95.com/construction/PlannedConstructionSectionD2F.htm
It will be two continuous lanes (in each direction) for future I-95 in both directions. Two lanes (in each direction) from future I-95 to future I-195 in both directions. The Turnpike will be widened from two to three lanes (that would be I-276 to future I-95 and vice versa). All other ramps are planned to be single-lane.
Strangely enough, the diagram shows that a third lane is not planned to be added to northbound I-95 between the PA 413 exit ramp (exit 40) and the future I-95 ramps (to the eastbound Turnpike). In other words, the northbound ramp configuration for future I-95 will be 3 to exit 40, then 2 continuing through the interchange, then 3 again on the main line of the Turnpike.
In other, other, words, PennDOT will be creating another brand-new major lane-drop situation, a two-lane bottleneck in the middle of a three-lane throughway.
As far as the opening comment regarding the mainline I-95 ramps through the I-476 interchange; that should have been 6-lanes from the get-go (I agree). My guess as towards why it wasn't built that way in the first place was probably due to either land aquisition issues particularly along the southeastern end of the interchange or PennDOT grossly miscalculating estimated traffic volumes.
PennDOT frequently constructed major interchanges with lane drops. On I-95 alone, there is Girard Ave. (exit 23), Betsy Ross Bridge/Aramingo Ave. (exit 27), and Cottman Ave. (exit 30). These lane drop configurations and the congestion they induce (for no good reason) are one of the major drivers of the reconstruction effort now underway (with various sections in design or construction). All of the interchange lane drop situations will be eliminated.
The only one planned to remain is the one at the I-676 interchange (exit 22). That's ironically the one place where a lane drop actually makes sense. During peak traffic times (the rushes), most traffic exits onto 676 from both directions on 95. I-95 through traffic is actually rather light. Who'da thought?
'Course there will be that new one they're planning that I mention above…