Re: Assembly Square Redevelopment
Only if some sort of pedestrian crossing connects the casino to the Gateway Plaza (also in Everett, across the commuter rail tracks) and then to Assembly Square (across the Mystic River). We on the Somerville Bicycle Committee have been advocating for such a connection; perhaps it can be demanded in exchange for approving the casino?
Probably the best you're going to get is when the Route 16 bridge over the tracks and the old Mystic draw are replaced with all-new spans. I haven't seen renderings of what MassDOT is designing or know if it's even all the way through final design yet, but there's no way they can totally replace those without substantial improvements to ped access on those currently terrifyingly narrow sidewalks. The connectivity could be improved somewhat in very roundabout fashion if the new bridges got ultra-wide sidewalks with tall barriers between the road, maybe striping a bike lane on the sidewalk (since the road will still have no shoulders) with plastic peg barriers separating peds from bikes:
-- Offset wide sidewalks along the road between Station Landing and Gateway Ctr. so it's grass-buffered, and install a properly safe crosswalk at the Wellington turnouts.
-- A more direct connection to the Mystic reservation paths on the Gateway side, and real crosswalks at the rotary.
-- A proper duck-under to Rivers Edge Drive with the widened bridge serving up real sidewalks underneath.
-- Better Bike to the Sea access if they did a small path extension from its Prescott St. terminus to a Gateway/Mystic path connection underneath 16 at Everett Jct.
For the Somerville side then you'd need to do the long overdue deed of busting 28 on the Mystic bridge down to 4 lanes, moving those sidewalk jersey barriers to substantially widen the sidewalks, and striping a real bike lane on a widened road shoulder.
It's not the same as a proper Assembly-to-Everett crossing, but I don't think you're getting that until some Urban Ring configuration is built 30 years in the future that doubles up the Eastern Route bridge and offers a sidewalk next to the tracks direct-connecting to Gateway and Bike to the Sea. The roundabout option is always going to be a pain, but with the 16 bridges getting a full teardown/rebuild the parkways don't have to be so nihilistically anti-ped. There's enough grassy knolls around the horn to do some useful stuff tied to the critically improved bridges.